Quad Bayer Mobile Sensor Technology in Full Frame Camera?

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Interceptor121 Veteran Member • Posts: 8,682
Quad Bayer Mobile Sensor Technology in Full Frame Camera?

I have reasons to believe the Sony IMX610 is quad bayer

https://www.sony-semicon.com/en/technology/mobile/quad-bayer-coding.html

When shooting full resolution there are more than normal false colour artefacts and no moire visible in the dpreview studio scene for the Sony A1 in certain areas

I believe those may be due to the remosaicing process.

Phones have been doing this for over 4 years now, we have 108 megapixels mobile phone that revert to a lower resolution in low light

In the case of the A1 when shooting 4K full frame video the camera defaults to half resolution and can output raw video to an atomos ninja v. In my opinion the IMX610 is used in low light mode for video. False colour artefacts disappear but of course moire can kick in

I believe looking at studio scenes that the Nikon Z9 that has a sensor produced by Sony Semiconductor Corporation has a similar construction and when shooting 4K full frame video raw drops to half resolution as well.

If I had to think of the opposite a standard CFA sensor of 50 megapixels I would not know how it could bin 2x2 pixels of different colors to make one pixel. Although this may be possible I have not found any reference that this technology exists. For monochrome pixels I see no issue but I can't see how this could be output on sensor to create mosaiced raw frames for video in real time. It could be of course that the camera is simply line skipping however in that case SNR would not improve

Another possibility is to take a matrix of 16 pixels to bin in group of 4 again I have not seen any evidence that this exists at hardware level on sensor while of course you can run it in mathlab or software but is slow

I mention this to Bill Claff that told me we would see a quad bayer in the raw file however as

SSS handles remosaic by installing an array conversion circuit on the image sensor chip as a unique technology. By leaving the array conversion processing to the hardware, low power consumption and real-time processing become possible, and these features can also be utilized in the video shooting mode.

You would see a standard reconstructed CFA pattern in the raw file and you would not know where it came from and if it was manipulated or not

Trivial to say I there are no datasheet of the IMX610 available to the public so you would need to disassemble it and put under a microscope to check how it is actually made

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