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is it normal to have this much dead pixel on the brand new canon ra?

Started Dec 11, 2020 | Questions thread
bclaff Forum Pro • Posts: 13,922
Re: is it normal to have this much dead pixel on the brand new canon ra?

bclaff wrote:

Franz Kerschbaum wrote:

its "hotter" pixels with higher dark current not visible in your bias test! That is quite normal also in our astronomical ccd and cmos cameras and taken care of by dark subtraction....

I have just sent to details on a revised test that is better at locating nad pixel arising from dark current.

Regards

The revised test showed about 60 pixels that are "bad" at long exposure as opposed to "normal" terrestrial exposures.

Here ia a graphical report of the four worst ones:

So these pixels seem to acquire dark current at an abnormally high rate.

I suspect this is normal and not considered a defect.

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

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