First experiments with IR adapted K-5
Quote Larry sahib: I think we can conclude that IR is not suitable for taking appetizing pictures of food. Who says that? Bring him to me, I shall give him (5) of my best - thus said my Padre in our Catholic Boarding School, waving his well oiled malacca cane. Those were the days when the cane fell on your bottom for any mischief. So Larry, you have already demonstrated that BW is ok for food photos. Provided of course your food photo customers salivate only on seeing colorful food - food turns dark cooked anyway. Now you have an exciting Project on hand with your IR K-5 - will keep you busy till the next year experimenting and learning. Hint: check how a Sony camcorder handles IR night shot both in BW and color. Regards. Bipin - photography is the only tool that will stop time itself -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
Larry, the dance shots are great, your camera and no-light settings are perfect. The sushi shots, on the other hand, not so appertising IR block filters are easy to come by, just ask your friendly Leica pusher. Not cheap, but easy. Ahem On 11/08/2013 8:22 AM, Larry Colen wrote: Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ I got my K-5 back from Pro Camera Repair yesterday. They repaired the broken sensor, and converted it to (full spectrum) IR for $350, which is about $100 less than CRIS wanted to just repair it. Most of my photos in the afternoon/evening were just of random things, because I had no idea how anything would turn out. I snuck out of the office, and ran down to San Jose camera. They had a 77mm, Hoya IR filter for $109, which is about what BH charges. Meanwhile Keeble and Schuchat wanted something like $240 for a 77mm IR filter. Neither one had a 49mm filter. I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. Comments, suggestions, feedback and ideas for processing are appreciated on these photos. They are *very* experimental, it is almost like learning photography all over again. Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. 3) If you get a full spectrum camera, budget a few hundred dollars for IR block and visible block filters for both primes (49mm ish) and Zooms (77mm ish). 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. 5) Accept the fact that photos will look weird. Don't fight it, go with it, and figure out ways to make that weirdness work. 6) When things do correct to closer to natural lighting, they'll end up kind of flat and pastel in shading. 7) For working with IR, you really want a camera that works well in Live View mode. You really want to see what the camera will be seeing. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. The guy i talked to at Pro said to send in the lens i would be using the most so they could adjust the af to it. I am going to get the 720 filter installed so i dont have to use externals should i go ahead and do my K10D Dave -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
I have to agree with others that the sushi looks revolting. A couple of the shots look like ones that have faded after 15 years in the sun on a cardboard advert in a restaurant window. To me the other shots look like you've documented a Ghoul's Night Out. :-) On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ I got my K-5 back from Pro Camera Repair yesterday. They repaired the broken sensor, and converted it to (full spectrum) IR for $350, which is about $100 less than CRIS wanted to just repair it. Most of my photos in the afternoon/evening were just of random things, because I had no idea how anything would turn out. I snuck out of the office, and ran down to San Jose camera. They had a 77mm, Hoya IR filter for $109, which is about what BH charges. Meanwhile Keeble and Schuchat wanted something like $240 for a 77mm IR filter. Neither one had a 49mm filter. I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. Comments, suggestions, feedback and ideas for processing are appreciated on these photos. They are *very* experimental, it is almost like learning photography all over again. Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. 3) If you get a full spectrum camera, budget a few hundred dollars for IR block and visible block filters for both primes (49mm ish) and Zooms (77mm ish). 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. 5) Accept the fact that photos will look weird. Don't fight it, go with it, and figure out ways to make that weirdness work. 6) When things do correct to closer to natural lighting, they'll end up kind of flat and pastel in shading. 7) For working with IR, you really want a camera that works well in Live View mode. You really want to see what the camera will be seeing. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
I'll never eat sushi again! I like sashimi better in any event . . . . Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola On Sun, Aug 11, 2013 at 7:07 PM, Bruce Walker bruce.wal...@gmail.com wrote: I have to agree with others that the sushi looks revolting. A couple of the shots look like ones that have faded after 15 years in the sun on a cardboard advert in a restaurant window. To me the other shots look like you've documented a Ghoul's Night Out. :-) On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ I got my K-5 back from Pro Camera Repair yesterday. They repaired the broken sensor, and converted it to (full spectrum) IR for $350, which is about $100 less than CRIS wanted to just repair it. Most of my photos in the afternoon/evening were just of random things, because I had no idea how anything would turn out. I snuck out of the office, and ran down to San Jose camera. They had a 77mm, Hoya IR filter for $109, which is about what BH charges. Meanwhile Keeble and Schuchat wanted something like $240 for a 77mm IR filter. Neither one had a 49mm filter. I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. Comments, suggestions, feedback and ideas for processing are appreciated on these photos. They are *very* experimental, it is almost like learning photography all over again. Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. 3) If you get a full spectrum camera, budget a few hundred dollars for IR block and visible block filters for both primes (49mm ish) and Zooms (77mm ish). 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. 5) Accept the fact that photos will look weird. Don't fight it, go with it, and figure out ways to make that weirdness work. 6) When things do correct to closer to natural lighting, they'll end up kind of flat and pastel in shading. 7) For working with IR, you really want a camera that works well in Live View mode. You really want to see what the camera will be seeing. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
Msashimi.. On Sun, Aug 11, 2013 at 7:11 PM, Daniel J. Matyola danmaty...@gmail.com wrote: I'll never eat sushi again! I like sashimi better in any event . . . . Dan Matyola http://www.pentaxphotogallery.com/danieljmatyola On Sun, Aug 11, 2013 at 7:07 PM, Bruce Walker bruce.wal...@gmail.com wrote: I have to agree with others that the sushi looks revolting. A couple of the shots look like ones that have faded after 15 years in the sun on a cardboard advert in a restaurant window. To me the other shots look like you've documented a Ghoul's Night Out. :-) On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ I got my K-5 back from Pro Camera Repair yesterday. They repaired the broken sensor, and converted it to (full spectrum) IR for $350, which is about $100 less than CRIS wanted to just repair it. Most of my photos in the afternoon/evening were just of random things, because I had no idea how anything would turn out. I snuck out of the office, and ran down to San Jose camera. They had a 77mm, Hoya IR filter for $109, which is about what BH charges. Meanwhile Keeble and Schuchat wanted something like $240 for a 77mm IR filter. Neither one had a 49mm filter. I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. Comments, suggestions, feedback and ideas for processing are appreciated on these photos. They are *very* experimental, it is almost like learning photography all over again. Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. 3) If you get a full spectrum camera, budget a few hundred dollars for IR block and visible block filters for both primes (49mm ish) and Zooms (77mm ish). 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. 5) Accept the fact that photos will look weird. Don't fight it, go with it, and figure out ways to make that weirdness work. 6) When things do correct to closer to natural lighting, they'll end up kind of flat and pastel in shading. 7) For working with IR, you really want a camera that works well in Live View mode. You really want to see what the camera will be seeing. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- -bmw -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
On Sun, Aug 11, 2013 at 07:11:05PM -0400, Daniel J. Matyola wrote: I'll never eat sushi again! Those pictures were chosen to show both the strengths and weaknesses of IR and full spectrum photography. I think we can conclude that IR is not suitable for taking appetizing pictures of food. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
First experiments with IR adapted K-5
Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ I got my K-5 back from Pro Camera Repair yesterday. They repaired the broken sensor, and converted it to (full spectrum) IR for $350, which is about $100 less than CRIS wanted to just repair it. Most of my photos in the afternoon/evening were just of random things, because I had no idea how anything would turn out. I snuck out of the office, and ran down to San Jose camera. They had a 77mm, Hoya IR filter for $109, which is about what BH charges. Meanwhile Keeble and Schuchat wanted something like $240 for a 77mm IR filter. Neither one had a 49mm filter. I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. Comments, suggestions, feedback and ideas for processing are appreciated on these photos. They are *very* experimental, it is almost like learning photography all over again. Some observations and notes: 1) In camera exposure metering is very unpredictable. I suspect that the metering also has IR filters over it, which weren't removed, so there is a strong disconnect between what the metering sees and what the meter sees. 2) For autofocus: If you are shooting in IR, use IR lights and live view, or stop things down more. Autofocus (on a full spectrum) is calibrated for visible light, not IR. 3) If you get a full spectrum camera, budget a few hundred dollars for IR block and visible block filters for both primes (49mm ish) and Zooms (77mm ish). 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. 5) Accept the fact that photos will look weird. Don't fight it, go with it, and figure out ways to make that weirdness work. 6) When things do correct to closer to natural lighting, they'll end up kind of flat and pastel in shading. 7) For working with IR, you really want a camera that works well in Live View mode. You really want to see what the camera will be seeing. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
On 8/10/2013 6:22 PM, Larry Colen wrote: Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ Still looks like bait. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
With an IR filter in front of the lens, and a normal IR cut filter on the sensor, yes foliage turns pink (some reds get through 720nm filters). Everything has a red and pink color to it. When you remove the IR cut filter from the sensor, it is seeing IR and visible at the same time, so colors are all kinds of shifted. It all depends on how much IR reflectivity different materials have. On Sat, Aug 10, 2013 at 8:41 PM, Zos Xavius zosxav...@gmail.com wrote: are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
so the ultra pink IR shots are taken with the hot filter still in place? I know this is possible, but that exposures are greatly lengthened to the order of minutes sometimes as the cut filter only lets small amounts of IR wavelengths pass. I was under the assumption that shooting with a naked sensor and an IR only filter would have the same results, but with normal exposure times. That's actually why I asked if the filter was in place in all of these pictures. Clearly more spectrum is coming through if you ask me. I never thought that mixing the two would look so drastic and almost flat. Interesting. On Sat, Aug 10, 2013 at 8:46 PM, David Parsons parsons.da...@gmail.com wrote: With an IR filter in front of the lens, and a normal IR cut filter on the sensor, yes foliage turns pink (some reds get through 720nm filters). Everything has a red and pink color to it. When you remove the IR cut filter from the sensor, it is seeing IR and visible at the same time, so colors are all kinds of shifted. It all depends on how much IR reflectivity different materials have. On Sat, Aug 10, 2013 at 8:41 PM, Zos Xavius zosxav...@gmail.com wrote: are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
OhI see that flash was used I think. That makes a lot more sense. The work in BW mostly, but look odd. Almost unreal. I kind of like it. On Sat, Aug 10, 2013 at 9:08 PM, Zos Xavius zosxav...@gmail.com wrote: so the ultra pink IR shots are taken with the hot filter still in place? I know this is possible, but that exposures are greatly lengthened to the order of minutes sometimes as the cut filter only lets small amounts of IR wavelengths pass. I was under the assumption that shooting with a naked sensor and an IR only filter would have the same results, but with normal exposure times. That's actually why I asked if the filter was in place in all of these pictures. Clearly more spectrum is coming through if you ask me. I never thought that mixing the two would look so drastic and almost flat. Interesting. On Sat, Aug 10, 2013 at 8:46 PM, David Parsons parsons.da...@gmail.com wrote: With an IR filter in front of the lens, and a normal IR cut filter on the sensor, yes foliage turns pink (some reds get through 720nm filters). Everything has a red and pink color to it. When you remove the IR cut filter from the sensor, it is seeing IR and visible at the same time, so colors are all kinds of shifted. It all depends on how much IR reflectivity different materials have. On Sat, Aug 10, 2013 at 8:41 PM, Zos Xavius zosxav...@gmail.com wrote: are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
On Sat, Aug 10, 2013 at 09:08:31PM -0400, Zos Xavius wrote: so the ultra pink IR shots are taken with the hot filter still in place? I know this is possible, but that exposures are greatly The ultra pink shots are taken with an IR only filter in front of the sensor or the light source. I suspect that the green elements in a bayerfilter are a notch filter, and don't let the IR through, while the red and blue are band block filters and let IR through. lengthened to the order of minutes sometimes as the cut filter only lets small amounts of IR wavelengths pass. I was under the assumption that shooting with a naked sensor and an IR only filter would have the same results, but with normal exposure times. That's actually why I asked if the filter was in place in all of these pictures. Clearly more spectrum is coming through if you ask me. I never thought that mixing the two would look so drastic and almost flat. Interesting. On Sat, Aug 10, 2013 at 8:46 PM, David Parsons parsons.da...@gmail.com wrote: With an IR filter in front of the lens, and a normal IR cut filter on the sensor, yes foliage turns pink (some reds get through 720nm filters). Everything has a red and pink color to it. When you remove the IR cut filter from the sensor, it is seeing IR and visible at the same time, so colors are all kinds of shifted. It all depends on how much IR reflectivity different materials have. On Sat, Aug 10, 2013 at 8:41 PM, Zos Xavius zosxav...@gmail.com wrote: are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
Larry, have you thought about UV? It should be sensitive to that as well now. I kind of like UV photography. Thanks for sharing these. I look forward to more of your adventures with IR. I think that my older k-7 is going to be fixed that way eventually. On Sat, Aug 10, 2013 at 9:11 PM, Larry Colen l...@red4est.com wrote: On Sat, Aug 10, 2013 at 09:08:31PM -0400, Zos Xavius wrote: so the ultra pink IR shots are taken with the hot filter still in place? I know this is possible, but that exposures are greatly The ultra pink shots are taken with an IR only filter in front of the sensor or the light source. I suspect that the green elements in a bayerfilter are a notch filter, and don't let the IR through, while the red and blue are band block filters and let IR through. lengthened to the order of minutes sometimes as the cut filter only lets small amounts of IR wavelengths pass. I was under the assumption that shooting with a naked sensor and an IR only filter would have the same results, but with normal exposure times. That's actually why I asked if the filter was in place in all of these pictures. Clearly more spectrum is coming through if you ask me. I never thought that mixing the two would look so drastic and almost flat. Interesting. On Sat, Aug 10, 2013 at 8:46 PM, David Parsons parsons.da...@gmail.com wrote: With an IR filter in front of the lens, and a normal IR cut filter on the sensor, yes foliage turns pink (some reds get through 720nm filters). Everything has a red and pink color to it. When you remove the IR cut filter from the sensor, it is seeing IR and visible at the same time, so colors are all kinds of shifted. It all depends on how much IR reflectivity different materials have. On Sat, Aug 10, 2013 at 8:41 PM, Zos Xavius zosxav...@gmail.com wrote: are these all with a filter? I thought greens went pink in IR yet the lettuce is clearly still green. very odd. Its not what I would expect at all. I'm so used to seeing extremely processed IR pictures. On Sat, Aug 10, 2013 at 7:21 PM, Larry Colen l...@red4est.com wrote: Excellent! Thanks! On Sat, Aug 10, 2013 at 06:32:01PM -0400, Matthew Hunt wrote: On Sat, Aug 10, 2013 at 6:22 PM, Larry Colen l...@red4est.com wrote: 4) The color adjustment in LR doesn't go far enough, in either temperature or tint. I will eventually experiment with two pass color correction, exporting the file to DNG or TIFF, then running it through again. I have no personal experience, but I have read of people creating custom camera profiles to deal with the inadequate color temperature range. See, for example: http://www.luminescentphoto.com/blog/2013/07/15/setting-white-balance-on-infrared-images-with-lightroom-with-video/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com http://red4est.com/lrc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: First experiments with IR adapted K-5
on 2013-08-10 16:22 Larry Colen wrote Cutting to the chase: A friend and I went out for sushi before going dancing. There are some strong artistic limitations to IR photography, the set also includes a couple randoms from the afternoon: http://www.fluidr.com/photos/ellarsee/sets/72157635017858426/ not appetizing! but the violas were pretty cool This set was shot at Friday Night Blues. The thing that got me into IR in the first place was being able to use a flash without blinding people, each shot is processed in both color and BW: http://www.fluidr.com/photos/ellarsee/sets/72157635011398151/ color ones are sort of instagrammish; bw interesting, eerie (weird pupils on the portrait) I haven't been able to find a good source on an IR block filter, to convert the camera back to visible only. 2filter.com lists some IRND filters (IR-blocking neutral density), so the 0.3-stop one might be a start; i have bought from 2filter.com and i admire their retro website also a search on ir cut filter, then using the handy facets, found these 77mm options at BH (mostly UV+IR filters) http://www.bhphotovideo.com/c/search?atclk=Circular+Sizes_77mmsts=maci=15293N=4294205295+4294955264Ntt=ir+cut+filters (the heliopan will cost more than your conversion) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
