Canon Line Offset Noise

Started Oct 20, 2009 | Discussions thread
GaborSch Veteran Member • Posts: 7,203
How to apply the correction

1. Load an image in Rawnalyze and press Ctrl-F8. The entire active image area will be used as a template; the average pixel value per column will be calculated and recorded.

Of course only a black frame yields anything useful.

2. Press Ctrl-F9; this applies the recorded correction instead of the "normal" black level correction. Turn up the intensity to +8 EV; the banding is now gone (of course).

3. Load any other image from the same camera, with the same ISO, which exhibits banding. Press Ctrl-F9 to apply the correction and compare the result on different patches (start Rawnalyze once more and look at the same image unmodified).

Note: this is a temporary, quick and dirty function, I will probably remove it. If you load the template and try to use it with an image of another camera make/model, the program may crash or the result will be unexpected.

Post (hide subjects) Posted by
xxD
xxD
xxD
xxD
xxD
xxD
xxD
xxD
tko
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow