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."
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-- graywolf http://graywolfphoto.com
"You might as well accept people as they are, you are not going to be able to change them anyway."
