On Tue, Jul 21, 2009 at 09:25:42AM -0700, Bruce Dayton wrote: > For what it is worth, your expectation may be a little high for the > K20. Where did you come up with this expectation. Generally
When I got the K20 I dropped, I remember being very impressed at how well it handled higher ISOs. These pictures were in much worse lighting than the ones I shot last weekend: http://www.flickr.com/photos/ellarsee/sets/72157614927248026/ On this trip, I did a lot of shooting at higher ISOs: http://www.flickr.com/photos/ellarsee/collections/72157618384885452/ This set has several at 400-800 http://www.flickr.com/photos/ellarsee/sets/72157618427088419/ This set has a couple up to ISO 3200 http://www.flickr.com/photos/ellarsee/sets/72157618521434968/ When it was replaced by my current K20, it seems that even ISO 400 will look noisy and crappy: http://www.flickr.com/photos/ellarsee/sets/72157620576275348/ > speaking as the photosites get smaller, noise gets stronger. So > there has to be a way to compensate for it. It is my understanding > that manufacturing has improved so that the photosites are too much > smaller than the older 6mp sensors. Less than half the area, 6/14.9 as much area. > What I am getting at here is that your expectation may be off. How > do the normal images look? Those not boosted to high iso? I did very little high ISO shooting on this trip: http://www.flickr.com/photos/ellarsee/collections/72157621292072536/ A lot of these were at ISO 500 and noisier than I had hoped: http://www.flickr.com/photos/ellarsee/sets/72157621291376438/ > > The best thing to do is compare to another K20. I agree, that's what I want to do. > I'm in Sacramento so > not too convenient. I do work in SF every Thursday. I tend to get to SF on Friday evenings. > > -- > Best regards, > Bruce > > > Tuesday, July 21, 2009, 8:11:42 AM, you wrote: > > LC> On Tue, Jul 21, 2009 at 07:29:29AM -0400, paul stenquist wrote: > > >> Why would you add +.7 exposure comp on the K100 but not on the K20? > > LC> Because without the exposure compensation the K100 was > LC> underexposing. At nominal exposure, the white in the background on the > LC> K20 was on the verge of clipping, with the K100, I had to tweak the EV > LC> to expose to the right. > > LC> I was getting both cameras to expose correctly so that it would not be > LC> an apples to oranges comparison. > > >> More exposure will reduce the noise on both cameras. Again, it's > >> apples to oranges. > > LC> The problem is that what I really need is to compare my K20 with > LC> another K20. I'm trying to find out if my K20 is working properly, and > LC> my understanding is that it is supposed to be so much better than the > LC> K100, that there shouldn't be any question. I should not be able to > LC> make the K100 work even close to as well as the K20. > > LC> But, perhaps I spent $800 for far less improvement in image quality > LC> than I expected. > > >> Paul > >> On Jul 21, 2009, at 3:42 AM, Larry Colen wrote: > >> > >> >On Tue, Jul 21, 2009 at 12:34:36AM -0700, Joseph McAllister wrote: > >> >>Hardly a labeled K20 shot in the bunch, Larry. You've duplicated the > >> >>urls on most of them. > >> > > >> >Oops, The URLs for the sets which have 18 or 27 shots each were > >> >correct. > >> > > >> >And they're all in the collection: > >> >http://www.flickr.com/photos/ellarsee/collections/72157621749552926/ > >> > > >> >> > >> >> > >> >>On Jul 21, 2009, at 00:21 , Larry Colen wrote: > >> >>>K100, at 1000x800 > >> >>>http://www.flickr.com/photos/ellarsee/sets/72157621756137388/ > >> >>> > >> >>>K20 at 1000x800 > >> >>>http://www.flickr.com/photos/ellarsee/sets/72157621756062718/ > >> >>> > >> >>>K100, cropped in tight > >> >>>http://www.flickr.com/photos/ellarsee/sets/72157621631845587/ > >> >>> > >> >>>K20 cropped in tight > >> >>>http://www.flickr.com/photos/ellarsee/sets/72157621631845587/ > >> >>> > >> >>> > >> >>>K20 ISO 3200 > >> >>>Exposure: 0.6 > >> >>>Aperture: f/5.6 > >> >>>Focal Length: 77 mm > >> >>>Exposure: 0.00 > >> >>>ISO Speed: 3200 > >> >>>http://farm3.static.flickr.com/2481/3742194472_2a6494a52f_o.jpg > >> >http://www.flickr.com/photos/ellarsee/3741392561/in/set-72157621631852205/ > >> >http://farm3.static.flickr.com/2583/3741392561_b9288fdf07_o.jpg > >> > > >> >>> > >> >>>K100 ISO 3200 > >> >>>Exposure: 0.8 > >> >>>Aperture: f/5.6 > >> >>>Focal Length: 77 mm > >> >>>Exposure: 0.00 > >> >>>ISO Speed: 3200 > >> >>>Exposure Bias: +0.7 EV > >> >>>http://farm3.static.flickr.com/2481/3742194472_2a6494a52f_o.jpg > >> >http://farm3.static.flickr.com/2481/3742194472_2a6494a52f_o.jpg > >> > > >> >>> > >> >>>K100 ISO 800 pushed 1 2/3 stops > >> >>>Exposure: 1 > >> >>>Aperture: f/5.6 > >> >>>Focal Length: 77 mm > >> >>>Exposure: +1.90 > >> >>>ISO Speed: 800 > >> >>>Exposure Bias: -1 EV > >> >>>http://farm3.static.flickr.com/2576/3742195532_35f085de3e.jpg > >> >http://farm3.static.flickr.com/2576/3742195532_35f085de3e.jpg > >> >http://farm3.static.flickr.com/2576/3742195532_1e99ae1e6f_o.jpg > >> > > >> > > >> >>>-- > >> >>>The first step is learning to take great photos, > >> >>>the second step is learning to throw away ones that are merely good. > >> >>>Larry Colen [email protected] > >> >>>http://www.red4est.com/lrc > >> >> > >> >>Joseph McAllister > >> >>[email protected] > >> >> > >> >>http://gallery.me.com/jomac > >> >>http://web.me.com/jomac/show.me/Blog/Blog.html > >> >> > >> >> > >> >> > >> >> > >> >> > >> >>-- > >> >>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. > >> > > >> >-- > >> >The first step is learning to take great photos, > >> >the second step is learning to throw away ones that are merely good. > >> >Larry Colen [email protected] > >> >http://www.red4est.com/lrc > >> > > >> > > >> >-- > >> >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. > > > > > -- > 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. -- The first step is learning to take great photos, the second step is learning to throw away ones that are merely good. Larry Colen [email protected] http://www.red4est.com/lrc -- 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.
