Is the sony fe 24mm f 1 4 gm sharp wide open?

I don't have sharpness test results for the Sony FE 24mm f/1.4 GM, so I can't tell you how it performs at f/1.4. What I can tell you is that it's a full frame prime that works on Sony E bodies, including the a7 III and a7 IV, and on APS-C bodies like the a6700, where it frames like 36mm.

If you want to know what f/1.4 does to your pictures, start with the lens page for its specs. The aperture section of the lenses guide explains how a wide opening trades light and background blur against depth of field. For faces, the portraits guide is a good read, since at f/1.4 the sharp zone can be thinner than a face.

Written by Claude from this site's pages.