Amazing lens, incredible sharpness

PaulM2 wrote:

With no intent to hi-jack the original post, my 2 cents worth.

I play with old legacy glass from my old film cameras and the above discussion, I have read with great interest.

I have the adapter that allows me to mount, say my 45mm/f2.0 Minolta film lens, to my PEN. With the 2x crop factor in mind, my angle of view or should I say DOF, is equivalent to a 90mm on a 35mm film camera. But the f stop is still f/2.0, as I did not change any of the physical aspects of the lens itself? Its still the same old lens I used many years ago. (the focal length of the lens and the physical size of the aperture determines the "f" number)

Yep, it's the same old lens.    Still f/2. I'd stick with angle-of-view or field-of-view when describing horizontal/vertical/diagonal coverage. DOF also describes coverage of a sort...but not the same sort.

I fought with this concept in my mind for some time. But when I consider that I must shoot this old stuff in manual mode, set the focus, aperture, shutter speed, ISO, I am lucky to get the first exposure even close.

And as a added note, this old lens on the PEN does not work as well as it does on my DSLR. Could be a problem with the adapter? But it was fun to try.

Again, thanks to all who have posted. Very interesting.

There are quite a few lenses I love with film & APS-C/35mm digi that don't do so well in front of an m43 sensor. It's a shame when this happens...but it is what it is. Fortunately we have great lenses like the Oly 75mm...one of the finest I've ever owned in any format.

-Dave-