Here is what I found in the archives in photo.net
"A major exception to the above occurs with mirror lenses, which have a
significant amount of light blocked by the secondary mirror they have in
front. It is rare to find, nowadays, anyone who uses both a handheld meter
and a mirror lens. Those who do know enough to take the transmission losses
into account. "
-- Hector Javkin, July 14, 1999; 09:34 P.M. Eastern
Yikes-What is the definative answer here?
Do you guys out there shooting with mirrors have dim viewfinders greater than
the f- stop should be?
John Raymond
Olympia, WA
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|