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Touptek IMX294C 14-bit to 16-bit scaling

Posted: Wed Jan 17, 2024 1:30 pm
by Ilmen63
Hello,

I am using a new Touptek IMX294C (ATR3CMOS10300KPA) and switched to SharpCap from NINA and APT. I have recorded some trial darks. APT and NINA show ADUs around 50-70 on the 14-bit scale. The SharpCap darks (same time, gain, temp.) give ADUs around 800. I was expecting a factor of 4 due to the 14-bit to 16-bit scaling. Am I doing something wrong?

Thank you
Dirk

Re: Touptek IMX294C 14-bit to 16-bit scaling

Posted: Wed Jan 17, 2024 4:12 pm
by admin
Hi Dirk,

an increase of a factor of 4 due to scaling up to 16 bit would be expected as you say, but there is also a possibility that the 'Black level' control is set differently between the two applications - this directly controls the pedestal values added to every pixel in the image by the camera, so different settings could easily lead to the different pixel values.

cheers,

Robin