I had the same problem .not as severe as that though.
if u use photoshop raw converter..turn the sharpining all the way down. color and liminance noice reduction to 100% . adust the contrast slider all the way to the left. This fixd the problem for me. After the raw file is converted you can use levels and curves then to make any adjustments
Try the eos viewer to convert the same raw file if u still have it.
My pics coverted in dpp are so noisy..i stopped using it. can you see that banding in lcd screen after u took the shot?
do have the custom function set to on or off for noise reduction for long exposures?
Hi John, That's very disturbing. Were you using a flash (why would you with night sky exposures, I know, but I'm trying to get an idea of the nature of the problem since I shoot long exposure aurora images and am considering an upgrade to my 10D). Personally, I'd send this camera back, either to the retailer or to Canono for repair or replacement.
Basically if you want to reproduce it easily, go into a room with contrasty light (shadows are good). Use your on board flash at higher ISOs (400 and up).
Why it's doing this *without* onboard flash is beyond me...
I took 32 indoor shots aperture priority ,fixed 250, all pics came out fine , zero banding ..just color noise in the shadows . I think u should return your copy.
What's the exif data for that shot? It seems to have severe overexposure along with some serious flare.
In fact, the banding almost resembles kind of a "linear flare" on the sensor or microlens filter that might occur under the same extreme conditions that would cause heavy flare on a lens.
This topic has been discussed many times before on this forum but with no solution or remedy for those who it effects. Many believe that it is a problem with the camera design, not something that Canon will fix under warranty.
Everyone who has fired the onboard flash on long exposures so far has gotten severe banding even at low iso. Of course it is very rare that anyone would need to do this so this is a non-issue for most.
However, many people, including myself, have noticed banding at iso 800-3200 quite frequently without firing the flash. Whether this is caused by the focusing motor in some lenses, or some other interference is not really known, but I get banding in about 30% of my iso 1600 if there are dark shadows.
This banding has nothing to do with the quality of the file or whether the picture is taken in RAW or JPEG. Those who have spoke to Canon so far have not gotten an expectable explanation for the cause, and I have not heard of anyone who sent the camera back for warranty with success.
All of us who have this problem would love to have a solution surface, but so far we are still waiting...
Justin, I've seen those threads recently however I have one question I'm curious about. In the 30% of pictures that do show banding, does NeatImage or anything else help clean it up? I've heard some people say yes and some say no. just curious as to your take on that.
