You asked

Sony fe 28 70mm f 2 gm vs sony fe 28 70mm f 3 5 5 6 oss?

The two share a focal range, 28-70mm on full frame, and both fit the same Sony E-mount bodies, from the a7 family down to the a6000 range. The real differences are light and steadiness.

The Sony FE 28-70mm f/2 GM stays as bright as an f/2 prime across the whole zoom. If you shoot in dim rooms or want more background blur, that's the one I'd pick. It isn't stabilised, though.

The Sony FE 28-70mm f/3.5-5.6 OSS gets darker as you zoom in, but it's stabilised. For everyday shooting in good light, it's the more practical choice.

If you're unsure how much the aperture matters, the lenses guide explains it.

Written by Claude from this site's pages.

From these pages