I had the Pentax A 35-105/3.5. This lens surprised me when I tested it on APS-C (crop 1.5x) digital cameras. But it is quite unhandy to use. Too big and too heavy for a small camera.
I sold it before I bought the Sony a7c, so I didn't test it on a full frame sensor.
Now I have the Pentax A 35-70/4.
This lens is more comfortable to use. I tested it a bit with the Sony a7c. And it looks pretty good. Also it is possible to test the lens on a film camera: the Pentax Super A. This camera even supports program modes (P, Tv), since the Pentax A has the A position of the aperture ring.
An unusual (for me) thing I found on the Pentax A 35-70/4 is how the minimum focusing distance (MFD) depends on the focal length.
70mm: 0.247m
50mm: 0.275m
35mm: 0.575m
The shorter the focal length, the longer the MFD.
See also related notes:
- Pentax A 35-70/4: Samples [3] - FF - 50mm - f/4 (2025-07-01)
- Pentax A 35-70/4: Samples [2] - FF - 70mm - f/4 (2025-06-07)
- Pentax A 35-70/4: Samples [1] - FF - 35mm - f/4 (2025-05-11)
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