I have used my old Nikon glass with my a6000 using a "dumb" Metabones adapter. In other words, I have to focus manually and use manual or partly manual exposure settings. My results with my 200 mm prime were not as good as I was expecting. Then I bought a mint 300mm F4.5 and I still found that it did not perform to my expectations. OTOH, my 50mm F1.8 is fantastic on my Sony.

You will want to use "peaking" for focus and while it does work pretty well, it's not as good as a good focus screen in an old, film SLR. I find that the new lenses with AF and that are recognized and "corrected" by the camera are usually better.

Focus peaking is very convenient but for best manual focus use the focus assist feature. You may have to dedicate a button for it. Press the button and it enlarges the image, reds again and it enlarges again so you can get really sharp focus.


Exposure is no problem even with the dumb adapter (around $100 if I recall).

You will have to tell the camera, in menu, that it's OK to "release" without lens because the camera thinks there's no lens when you do as I have done.

Feel free to PM for more detail