Thanks! I feel marginally smarter now. http://photo.net/photos/RickW
On Wed, Feb 25, 2015 at 12:00 AM, Darren Addy <[email protected]> wrote: > A "full spectrum" conversion removes the low pass IR filter/AA filter > sandwich that sits in front of your camera's sensor. It is replaced > with a clear "window" (the quality of which is normally what makes the > real price difference between conversions). Once that is done, your > sensor is open to whatever filter you put in the optical path. That > filter could be on the front of the lens (as we normally think of > photographic filters) or it could be behind the lens, in the body. > > They can be used for Infrared Photography. Depending upon the > wavelengths you let through, you can get various looks of IR imagery: > http://procamerarepair.3dcartstores.com/Infrared-Sample-Photos_ep_69.html > > They can be used for UV Photography: > http://www.ultravioletphotography.com/content/ > > Or they can be used for "narrowband" photography, which is the main > thing I want one for. As you guessed, that involves astrophotography. > Moonlight and city lights/street lights can interfere with ordinary > imaging. But with a full spectrum camera you can put a narrowband > filter (like a Hydrogen Alpha filter) in the light path and photograph > very faint objects (that emit Ha) even in (what would otherwise be) > the glare of the moon or light pollution. > http://www.astropix.com/HTML/I_ASTROP/DSLR_HA.HTM > > This is a beautiful and educational video, if you are interested in a > good explaination of narrowband astrophotography: > http://www.youtube.com/watch?v=E842Rs-iB2I > > It is still possible to use a full spectrum camera for regular > photography of one puts the UV/IR low pass filter (that was in front > of the sensor) in front of the lens again. I also read that this can > be done (without a filter) with a custom white balance, but I'm more > interested in using the full spectrum camera for the "weird" stuff and > using an unmodified camera for photography as God intended. > :) > > On Tue, Feb 24, 2015 at 7:21 PM, Richard Womer <[email protected]> wrote: >> Stupid Question Department: What's a full spectrum camera? Is it for >> astrophotography? >> http://photo.net/photos/RickW >> >> >> On Tue, Feb 24, 2015 at 1:00 AM, Larry Colen <[email protected]> wrote: >>> I had mine done at pro camera repair in San Diego. I don't think that they >>> removed the AA filter, you could ask them yourself: >>> http://www.procamerarepair.com/ >>> >>> >>> Darren Addy wrote: >>>> >>>> Greetings, >>>> I'm considering saving my nickels to get my K-01 converted to a full >>>> spectrum camera. If I'm not mistaken there are a few on the PDML that >>>> have gone this route. >>>> >>>> I'm not clear on whether BOTH IR-Cut filter and the AA filter is >>>> removed as part of the process. With a Canon these are essentially >>>> sandwiched together (at least the Canon Digital Rebel XSi (450D), XS >>>> (1000D), T1i (500D)& T2i (550D) according to this page: >>>> http://dslrmodifications.com/rebelmod450d4.html >>>> This page has an illustration (a ways down) of a similar look at the >>>> K-5 II and I'm assuming that is similar to the K-01 >>>> http://www.imaging-resource.com/PRODS/pentax-k5-ii/pentax-k5-iiA.HTM >>>> >>>> Those of you that have had Full Spectrum conversion done, do you know >>>> what material was used as the clear window in your conversion? >>>> >>>> If your converted camera has Live View, I'm curious as to whether >>>> there is enough light to focus with an IR filter (or some such) in the >>>> optical path and using Live View. If that is possible, then I think >>>> that the K-01 is an excellent candidate for putting a filter inside >>>> the body (no mirror to worry about). >>>> >>>> I also *just* discovered that you can use the PC/AV OUT on the K-01 like >>>> this: >>>> >>>> http://www.pentaxforums.com/forums/138-pentax-k-01/227354-probs-med-k-01-life-view-ext-tv.html#post2420487 >>>> That example is using video recording to make its point and I've just >>>> sent the poster a question to see if it works with Focus Peaking on >>>> still shots as well. If so, I'd like to get an external LCD monitor to >>>> aid in focusing for astrophotography. Or maybe just figure out how to >>>> hook it up to a laptop? I'm sorta dumb about these adapter questions. >>>> >>> >>> -- >>> Larry Colen [email protected] (postbox on min4est) >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> 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 >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above and >> follow the directions. > > > > -- > Life is too short to put up with bad bokeh. > > -- > PDML Pentax-Discuss Mail List > [email protected] > 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 [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
