William Robb wrote: > ----- Original Message ----- > From: "David Weiss" Subject: Re: Another k10D problem or just an old one? > > >> Paul Stenquist wrote: >>> He's shooting jpegs on bright setting and underexposing by two to >>> three stops. How can you conclude it's not normal? >> Wow, I thought people on this list could curb the sarcasm and help a >> person. Is that beyond everyone these days? >> >> I said this problem showed up on RAW photos as well. >> >> The problem is evident on picture number 3, which is clearly not >> underexposed. > > Dave, what part of "reciprocity failure" did you miss?
The part that says it applies to digital sensors. If it does, that is something I was totally in the dark about. If you have this documented somewhere, please send the link and I will read-up on it. I am very naive concerning such things. My image labeled "10" still shows the coloring affect, although not as strongly. It was shot at 1/10s, f13, 400 sensitivity. In your opinion, would that still qualify for reciprocity failure? Seems like it should be receiving adequate light, albeit underexposed about 1.5 to 2 stops. It seems to me that if I shot an image with these settings, and shadow of two stops was in the scene, I would still get this color problem in the shadow even if the rest of the scene was exposed correctly. I am not claiming this to be true, it just seems logical to me. If it is not, please explain why as I would truly like to understand this better. I am really just trying to understand this whole situation. > I think it has to do with the low intensity of light playing havoc with the > sensor. Try repeating the test at a wider aperture and see what happens. > > William Robb > I will, hopefully in the next few days. Sorry for hassling the list. Dave -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
