Originally posted by John Poirier If anyone cared enough to try, it would not be all that difficult to, for example, use a spot meter to measure relative viewfinder brightness while changing apertures.
Just out of curiosity, I put the M 50/1.4 on an MX body (it has the best VF I own) for the first time in about 12 years (which is a shame) and
re-discovered that subtle changes in perceived brightness and DOF are discernible all the way through f1.4 --
if the VF is good enough to take advantage of the fact.
While this capability isn't available with (most) "modern" bodies IMO it
is possible. We just don't get to enjoy it any longer since one of the compromises of auto focus is penta-mirrors with crippled view finder economics. Considering the consumer demographics which grew up with AE/AF P&S cameras and never knew anything better this shouldn't be too surprising.
So I've gotta go with John's "
sometimes" as being a true statement, but I can only wish it was still as true for my present day DSLR bodies. As it is, I've gotta go with the pragmatic combination of procedures and gear that work for me in actual practice.
[ How 'bout a 12 MPS sensor in a P3n-sized body with an MX view finder using micro-SD cards, selective ISO, AAA-sized batteries, selectable TTL center or spot metering and compatible with SMC-M and -A lenses? And no #@&^% in-camera flash bump to hide the aperture ring! I'd give up everything else (yes, including AF, AE and flash) from the modern SLR era for that very elegant package. ]
H2