Tokina 24mm 2.8 RMC on Sony A7

Ok, ok! The Tokina 24mm 2.8 RMC is not a Minolta lens. I keep it here because it has a Minolta mount. It used to be a cheaper alternative to the original Minolta 24mm 2.8, which was rather expensive.

Clicking on a crop loads the whole image in original size. A tip for Retina display users: Zoom in 1.5x or 2x. Otherwise you are not really in 1:1 mode.
Images are developed from RAW files in Ligtroom 5. All adjustments are Lightroom standard (sharpness: 25/1/25/0).

Tokina 24mm 2.8 RMC f/2.8

Just unsharp!

Tokina 24mm 2.8 RMC f/4.0

Not much better.

Tokina 24mm 2.8 RMC f/5.6

Center is acceptable rest not.

Tokina 24mm 2.8 RMC f/8.0

Better, but not good.

Tokina 24mm 2.8 RMC f/11.0

Edges have improved now, but chromatic aberration has gone up as well.

Conclusion Tokina 24mm 2.8 RMC

This lens on a digital camera is bad. I don't have a Minolta 24mm to compare with. I assume the Minolta 24mm won't be that good either, but better. The Tokina is not sharp, no resolution, no details there. Additionally, stopping down increases the chromatic aberration.

Trying to improve it with software doesn't make sense till f/5.6. f/8 and f/11 are usable. The lateral chromatic aberration can be corrected in Lightroom, then you get ok-ish images. The edges never don't get really sharp. Better we don't talk about corners. Below a corrected image at f/8. I corrected the chromatic aberrations and added some sharpening.