Need to see whether it is CF or FF Thanks Ramesh --- graywolf <[EMAIL PROTECTED]> wrote: > Does the Kodak lens say "CF" or "FF" on it? > > Ramesh Kumar wrote: > > My slides are plastic mounted. In my case, > expensive > > projectors and lenses does not seem to solve all > the > > problems!! > > > > I have Apollo lens and Kodak Select lens. With > Appollo > > lens, its hard to focus on anything. Kodak Select > lens > > is very sharp but has poor-edge sharpness problem. > > Kodak Select lens are expensive series > > > > > > Thanks > > Ramesh > > > > > > > > > > > > > > --- graywolf <[EMAIL PROTECTED]> wrote: > > > >>Also there are curved field lenses for paper or > >>plastic mounted slides, and flat > >>field lenses for glass mounted slides. If you have > >>the wrong one you will have > >>edge sharpness problems with your projected > slides. > >>Also if a non-glass mounted > >>slide is kept in the film gate too long the slide > >>will pop more than normal and > >>go out of focus either at the center or the edges. > >>Then the condensers in the > >>projector could be out of alignment. And there > were > >>$5 projector lenses and $500 > >>projector lenses the difference between them is > >>immense. Back in the old days > >>the Leitz and Schneider lenses were the best, with > >>several brands considered > >>somewhat below them. None of the Kodak lenses were > >>considered great, OK at best. > >> > >>All of the above says there could be any number of > >>reasons his projected slides > >>were not super sharp, even if the macro was. > >> > >> > >>William Robb wrote: > >> > >>>----- Original Message ----- > >>>From: "Fred" > >>>Subject: Re: FA 50/2.8 Macro > >>> > >>> > >>> > >>> > >>>>>>Sometimes the lens defects in the slide > >> > >>projector's lens can make > >> > >>>>>>a good slide (taken with a good camera lens) > >> > >>look bad. So, do > >> > >>>>>>you know for sure that the slide image itself > is > >> > >>soft at the > >> > >>>>>>edges? (Have you checked the slide with a > >> > >>loupe?) > >> > >>>>>You may be right, this could be due to > projector. > >> > >>I do > >> > >>>>>not see this behavoir when viewing on the 17" > >> > >>monitor. > >> > >>>>I have been right only on very rare occasions, > >> > >>Ramesh, so don't take > >> > >>>>anything I say too seriously - <g>. > >>> > >>> > >>>In this instance, I would say you are right. > Slide > >> > >>projectors tend to have > >> > >>>really bad lenses, though I am sure there are > >> > >>exceptions. > >> > >>>Also, there is no guarantee that the slide is > >> > >>perfectly parallel to the > >> > >>>screen, or that the curvature of the lens field > is > >> > >>identical to the > >> > >>>curvature of the slide (there will be some, > unless > >> > >>it is glass mounted). > >> > >>>As well, to get maximum light transmission, > >> > >>projector lenses tend to be > >> > >>>pretty fast optics, which leads to a whole nother > >> > >>set of problems. > >> > >>>Making a decision about camera lens quality by > >> > >>viewing a slide show isn't > >> > >>>thinking things through very well. > >>> > >>>William Robb > >>> > >>> > >> > >>-- > >>graywolf > >>http://graywolfphoto.com > >> > >>"You might as well accept people as they are, > >>you are not going to be able to change them > anyway." > >> > >> > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! SiteBuilder - Free, easy-to-use web site > design software > > http://sitebuilder.yahoo.com > > > > > > -- > graywolf > http://graywolfphoto.com > > "You might as well accept people as they are, > you are not going to be able to change them anyway." > >
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