on 15/3/04 9:46 PM, Michael Wilkinson wrote: > I'm not a canon user but suggest that if 2 or more of you are suffering the > same problem > its got to be worth using the power of groups such as this to confront the > maker with the > problem.
> ----- Original Message ----- > From: "Charlie Troman" <> >> I have been shooting with a 1ds for just over a year now, mostly use C1 >> pro to process raw files, then tweak in PS 7. >> Last friday i suddenly noticed red/magenta horizontal bands ( noise ) >> in the dark tonal areas of a shot...... re processed it in PS raw - >> same thing, even the corresponding jpeg has the same bands. They do >> stretch across the entire image but disappear over the light/midtones, >> if i push the levels right up you can see them more obviously, but in >> the darker tones they are more than apparent! Charlie & co, I too have discovered this same problem! The camera is just over a year old and last month I had to do a series of portraits against a black background. Oddly enough I hadnt encountered this shooting scenario before with my 1ds, but it quickly became apparent that I had found its achilles heel! The noise banding looks like squeegee marks down the long lenth of the frame... and only seems to appear against black. Thats why I had never noticed it before. I did find it looked worse on my laptop which has a brighter screen, and looked better on my calibrated studio monitor... but I still ended up masking and filling with black to feel safe about sending the job to print. The other thing that puzzled me is that the problem was notably worse on the processed raw files than the jpegs. I presumed that the camera is probably clipping the shadows end of the histogram automatically when shooting jpegs, but would be interested if anyone can confirm this. Anyway I think Michaels point above is a good one if this is a firmware upgrade issue... we would stand a better chance as a group. So can I chuck in my hat too! Tim Platt =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
