a7x, a9 PDAF stripe noise technical analysis, part deux

Started 9 months ago | Discussions thread
JimKasson
OP JimKasson Forum Pro • Posts: 21,636
Histogram equalized

JimKasson wrote:

With a little tweaking, I got a 768 image a9 stack to run in 256 GB of RAM. (Did I really say that?).

Here's the JPEG image of 1000 times the standard deviations, further stretched in Ps (maybe I should use histogram equalization next time):

I'm hoping that enough information to be useful survives the compression.

[edit: I just checked, and it looks like the patterning has survived. Greater sigma is lighter, less is darker.]

If anyone wants the TIFF, PM me. Adam, you already have it.

As above, but histogram equalized after black point subtraction of minimum. Still no gamma curve:

Jim

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