Canon Line Offset Noise

Started Oct 20, 2009 | Discussions thread
erikstefan Contributing Member • Posts: 821
Impossible to do Dark Frame Subtraction on banding

It is impossible to eliminate vertical banding with Dark Frame Subtraction.

The reson is because the "noise" in canon vertical banding is "dark", it's caused by the vertical wiring between the photocell.

While the dark frame subtraction is actually to subtract "illuminated noise" and "sensitivity difference" between pixels.

What you did in dark frame subtraction above is actually eliminating the "Signal" and illuminated noise on the "Signal", but it was not eliminating the vertical banding "Noise" which is the dark lines from the existance of wires in the design of Canon CMOS sensor.

Discussion are welcome
I am interested

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tko
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