I'm sure this is a dumb question, but here goes. What
is the difference between manual and automatic
extension tubes. I've looked at the pdf manual for
both, and I'm still not clear.
>From the auto extenstion manual:
"Each of these Auto Extension Tubes incorporates an
automatic diaphragm lever to stop down the lens
diaphragm to the preset aperture at the mement of
exposure as interlinked between the OM camera body and
lens for close-up photograpy."
How then does one control exposure with the manual
tubes?
Thanks,
Ralph
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