Marc Alhadeff listed the sharpest lenses for the A6xxx APS-C camera series. It’s interesting to see that the only “outstanding” lens is the Sigma 56mm f/1.4 E lens which is also among the cheapest to buy (Check price at BHphoto, Adorama, Amazon. Amazon DE, Amazon UK, Amazon FR, Amazon IT, Amazon ES)
A couple of important notes from Marc:
- It focuses only on the resolving power of the lens = sharpness
- Optical sharpness on APSC is obtained around F5.6-F8 at F11 diffraction is already visible and reduce the sharpness
- Many other criteria needs also to be considered before choosing a lens : AF accuracy and speed, Bokeh, background blur, color rendition , CA , resistance to flare, distorsion ….So don’t take the pure sharpness ranking on its own to make your choice but look at the other criteria as well
- For the APSC series only 2 models have in-body stabilisation : A6500 and A6600, so people doing primarily video should first look at the optical stabilization before sharpness. Only Sony lenses offers the OSS (Optical steadyshoot) among APSC lenses