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Thank you for the clarification, I understand much more now.
See the attached image, taken with the BBB and hand-held lens in front of Cam86.
One thing I am unsure about is how some "lines" do not shift the image but some have very drastic effect (see how the whole blocks of the image have been shifted around). I have a feeling there are two types of artifacts happening here, data loss (image shift) and also data mangling (visible lines but no image shift).
Also note black line on the bottom showing the missed data.
BBB is slow so all effects get emphasised. It may be useful to use a slow device for debugging the problem. I have noticed the "blocks" also on my PC but they don't happen very often.
And the windows driver also has lines but only on some machines. The issue probably exists everywhere but some machines handle the data transfer better and the issues are less obvious. My guess is that if enough images are taken on a machine that apparently works, the lines will eventually show.
I am just curious how this was not reported before on the Ukrainian forums, apart from Pat?
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