[libcamera-devel] libcamera on Librem 5, phase detection auto focus

Pavel Machek pavel at ucw.cz
Mon Nov 21 22:23:57 CET 2022


Hi!

> > I took deliberately defocused photo to make "defects" easier to see. I
> > guess I should take another one with less gain to keep other noise
> > down. Any ideas how to locate those bits?
> 
> The PDAF pixels will be located at fixed positions in the pixel array,
> documented by the sensor vendor. Some sensors will process the PDAF
> pixels and provide the processed information in the CSI-2 embedded data.
> I don't have access to the sensor datasheet, so I can't help much I'm
> afraid :-(

This is how it looks after the processing in gimp. The pairs of dots
make repeating pattern...

Best regards,
								Pavel

-- 
People of Russia, stop Putin before his war on Ukraine escalates.
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