Some very quick tests & comments, nothing scientific, I tried to focus mostly on my toes as I was laying on the sofa, then on a more distant target 😉 The adapter is tightly connected to the Canon lenses, and a little bit loose on the Sony body. Nothing that bad, even the Sony e-mount lenses can rotate a little bit on this camera body.
Now the lenses I quickly tested :
- Canon 17-40mm f4 L. Working fine, AF slow but reliable. Max aperture is fine.
- Canon 24mm f1.4 II L. Slow AF, but working and reliable. Max aperture is correct (f1.4). f1.8 appears as f1.7. Working fine in manual mode. A tad heavy on such a small camera 😉
- Canon 50mm f1.4. AF is not reliable, it’s slow and sometimes completely missing the target. Max aperture is correct, f1.4.
- Sigma 70mm f2.8 macro. Max aperture sometimes f3.2, sometimes f2.8. Autofocus is very slow, not really usable. But working in manual focus.
- Canon 85mm f1.8. AF is slow but working. Max aperture is fine.
- Canon 135mm f2 L. AF is slow compared to the lightning fast focus on a Canon body, but it’s working. Max aperture is fine.
So far, the old Canon 50mm and the Sigma 70mm Macro are the only lenses that I would really not use with AF even if I have enough time to let the camera focus. But all those lenses appear to be working fine with this adapter in manual mode. There can be occasional little glitches, with the camera not displaying the current aperture. I’m not sure if I would use this combo for any paid job with little time to take shots. But in manual mode with focus peaking, it’s very easy to use, I am really looking forward to testing it more.
More tests & comments soon for the Canon 70-200mm F4 IS L, some old manual focus lenses, and the Sony A7II with the new 2.0 firmware. Xmas vacations should be pretty busy !