Originally posted by MJSfoto1956 ...or you could put your Pentax camera in MFT Program Line (assuming it supports it) and see what the Pentax engineers think is optimal for any given exposure.
Michael
Hi Michael... good idea, but I'm not sure that would give the whole story. The kind of information I'm talking about would, for example, tell me that my 50mm f/1.7 lens is soft wide open with significant lateral CA, performs best *between* f/4.0 and f/11, and after that diffraction kicks in.
For the lenses I use often, I know this stuff anyway... But, if I think about my DA15 and DA70 - neither of which are getting much use right now - I honestly couldn't tell you the optimal range of apertures. If I was out shooting and decided to use either of those, I'd have to make a best guess. It would be nice to have a crib sheet with me.
Also, for those who don't yet have a particular lens, it might be useful to know where it shines.
As I say, if such a compilation doesn't exist, I'm happy to pull the information together for myself (and others, if interested)...