Yes Virginia, there are two different deep caps. There's only about 1mm
difference between the caps, but just enough so that the shorter one will
not fit on the longer lens.
If you had two of the longer caps, they'd fit all the lenses (80/4 Mk1,
80/4 Mk2, 135/4.5). But unfortunately, I have one of the shorter caps,
which limits its use.
Skip
At 2/28/00 08:17 PM -0500, you wrote:
At 06:41 PM 2/28/00 -0500, you wrote:
I just checked my 80/4 and 135/4.5 and the rear caps appear identical.
I also measured the length of the protruding rear element on each of the
lenses and they both seem to be about equal (to within a 1mm). My 80/4
is the newer auto-diaphragm model so perhaps the older manual version uses
a different rear cap.
I happen to have both 80s in my possession and can attest that the old
version has a flat rear element (so can take any standard rear cap) while
the new one has a deeply protruding rear element and therefore takes a
deep cap. Unfortunately I don't have the 135 to compare.
-----------------------------------------------
Skip Williams
Westfield, NJ
skipwilliams@xxxxxxxxx
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