Take a look at the PDAF stripes across the female model`s face in this image (cropped from an original vertical shot). The bad news is that it looks terrible. The good news? There`s a fix.
Among the major pieces of feedback we received when we published our Sony a7 III sample gallery concerned some odd striping artifacts viewable in some images, such as the one above.
It`s known as `PDAF striping` and it`s not limited to a single camera, or even a single brand. PDAF striping is one of those annoying issues which only shows up sometimes, and which depending on the kind of photography you practice, you might never see. But if you do see it, it`s pretty unpleasant, and very distracting. Particularly if you print large, or pixel peep.
In our shooting with the a7 III, prominent examples of bright stripes tended to show up up in images that contained a significant amount of flare or backlit subjects. It seemed to mostly be an issue with shots taken with the FE 85 F1.8, when subjects were captured with the intent of deliberately inducing flare (we saw it in a couple 100-400mm F4.5-5.6 GM shots, but it wasn`t offensive).
We investigated the issue further with the help of our very own knowledgable forum members, and are pleased to announce that as of today there is at least one fix available, and another is coming in the near future.
See the results for yourself:
JPEG processed from original Raw
JPEG from corrected (fixed) Raw
This fix is courtesy of Professor Hank Dietz, who is none other than the guy who developed a fix for Sony compressed Raw artifacts. His tool is available here. For now, it only works on compressed Raw files, but it works on any compressed Sony Raw file. That`s important, because this issue is not isolated to the a7 III by any means (though its predecessor the a7 II doesn`t appear to have any issues). It occurs with the a7R II/III, a9, R100 V - pretty much most cameras with masked pixels for on-sensor phas ...
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