Jonas B wrote:
[...]
I noticed some improvement: In AF-C focus locks better onto something when using the back focusing button. But... the lens AF is worse after updating as the focus now is pulsating around the target when closing down to f/4 or smaller aperture opening. That is in AF-C. I haven't tried any other AF setting. [...]
The pulsating, the focusing mechanism quickly and clearly audibly, goes back and forth around the focus point is hard to avoid. Wherever i pointed the camera, also at targets with a clear vertical line, the pulsating is there if at AF-C and f/4 or smaller opening.
Switching to AF-S or DMF puts an end to the pulsating. But... then there is another problem. The AF gets slow. The aperture mechanism closes and opens the blades slower than anything I have seen in a long time.
This is with my camera, a Sony A1: the aperture is closed o say f74 position. Pressing the shutter release button (or any other focusing button of your choice) makes the camera open up (a bit slower than with any Sony lens), focus (a bit slower again) and close down (a bit slow, yes, again). Now you can take the image. If in DMF mode and wanting to adjust or check the focus the MF problem with the lens focusing in clearly visibly steps when turning the focusing ring.
Compared to the Sony 40G the new TTA 40/2 is better in some ways. We have a somewhat faster lens, the background bokeh balls are smoother in some situations (the 40G makes rounder balls), the price is very much lower. Maybe something more.
Then the Sony 40G is better at everything else.
I hope the people at TTArtisan figure out how to update the lens making it usable in AF-C. Someone will find out. I'm sending my copy back.
Aug 22, 2025 at 09:26 AM
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