You asked

Is the sony sonnar t fe 35mm f 2 8 za good on aps c?

Yes, it works on APS-C. This is a full-frame lens, but it mounts on Sony E, and on an APS-C body it frames like a 52mm, a comfortable portrait-length view. f/2.8 also gives about the depth of field of f/4.2, so you get a little less background blur than the lens could give on full frame.

I'd pair it with an APS-C body like the Sony a6400 or Sony a6600. If you want a wider, faster standard view on APS-C, check the Lenses guide. For the exact crop maths, the focal length converter will show you the numbers.

Written by Claude from this site's pages.

From these pages