Diffraction the great equalizer? (Guess what the lenses are)
Hiepphotog was correct on guessing which lenses were in play here. But the first shot is the Zeiss Loxia 25mm, and the second is the SMC Pentax 28mm f/3.5 K.
I find some modern lenses seem to take a pretty step dive around f/16. The Pentax seems to slide steadily from f/11 to f/16.
The Loxia 21, 25 and the Pentax 28 (with adapter) are all around the same size and share a 52mm filter thread. I know that's a tight spread of focal lengths, but I do a lot of shooting between 20 and 30 (mainly landscapes.)
-Tim
Apr 26, 2019 at 10:57 PM
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