The response is overwhelming (thank you), and this being Monday it will take me some time to read over the responses and analyze the samples Russell sent me off-list. Olin Lathrop wrote: > Vitaliy wrote: >> Based on the content of your email I'd say you are the one who's >> confused, and I fail to understand why. What is the alternative to >> the F-stop? > > The confusion was because you referred to "14" as a larger aperture than > "4". That means either these are not common F-stop values or you are > confused, since high F-stop values actually mean a smaller arpeture. I didn't say it was a "larger aperture", I said it was a "larger aperture setting" (14 being a larger value than 4). Though I can see now that I could have said it better. >> It may be strange to you, but it is what it is. I can send you a RAW >> image if you are eager to check the metadata to confirm the fact. > > No, f/14 is unusual, but there is nothing wrong about it. I was trying to > make sure you really meant this and there wasn't something else going on. > Like when debugging a PIC program, you look for little things that just > don't seem right. Sometimes they are right after further investigation. > > However, it might be useful to show the two pictures you describe. This > is > not to verify the arpeture setting, but to see the nature of the > distortions > and noise. These are hard to describe in words, and the true problem may > be > easier to diagnose when the symptoms can be carefully examined. I'll try to upload them when I get a chance. It is not high priority for me right now, because as I mentioned we solved the problem on the digital side. Although I would like to know if there is an "optical" solution, going forward. >> All of your guesses are based on the assumption that my photographer >> and I are morons. So your suggested solutions below are useless. >> Thank you for the effort. > > Not morons, but unfamiliar with some of the details and physics of > photography. After all, you did ask, and you demonstrated some confusion > about arpetures or at least how they are communicated, so I think this is > a > justified assumption. > > Instead of just dismissing my explanation and suggestions because you > think > that I think you're a moron, I'd like to hear at least why specifically > you > think my explanation is wrong and therefore the suggestions ineffective. > So > far you have provided no facts that refute my guess as to what is going > on, > only unwarrented insults. Olin, I don't know what in my response qualifies as an "insult", but I am sorry that I was direct/bordering on rude. I guess I was tired and your "people who actually know what they're talking about" rubbed me the wrong way. I mentioned in an earlier post (responding to William "Chops" Westfield) that the low light/higher sensitivity setting assumptions are incorrect. All the settings are fixed, the only variable that is changing in response to the changes in aperture, is the timer setting. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist