> Fernando Gonzalez Gentile <fgnzalez@xxxxxxxxxxxxx> wrote:
>
...Lot's of stuff snipped...
Thanks for quoting the full contents of your letter from Olympus, interesting
reading
though I'm not sure I understand exactly what they are getting at !
I have noticed a similar issue when testing bodies for long exposure
capability.
Basically, set up a camera on a tripod in a dimly lit room pointing at a blank
wall
about 2m away. Unexposed film in the film gate, time the actual exposure with
a stop
watch. I found using a 50/1.4 initially that within a certain lighting range
the timed
exposure always doubled as I stopped down (expected result), except for f1.4 to
f2
where the time was less than double (about 1.5 from memory, details are filed
somewhere @home). This was confirmed using several OM bodies (OM-2N, OM-
4). I also tested another lens (can't remember which, possibly 100/2.8) with
the same
result.
Wayne Harridge
http://lrh.structuregraphs.com
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