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06/13/2006 02:57:47 PM · #1
What would cause the banding in the sky here?

and

Post processing was very minimal, straighten, resize etc. It came out of the camera this way. Could it be my UV filter? Is it some setting in my camera I am missing? Still learning my D70 so any help appreciated.
06/13/2006 02:59:53 PM · #2
That could be your filter. It happened to me some time ago. Do you have multiple filters on your camera? I had a Haze and a Polarizer and it screwed things up terribly.
06/13/2006 03:01:08 PM · #3
No other filter except the UV.
06/13/2006 03:01:09 PM · #4
I have seen banding like that come from levels adjustments in post processing. It also could be a cheap polarizer.
06/13/2006 03:16:58 PM · #5
You might add some chunky noise and apply gaussian blur, that destroys the banding. I don't knwo where it's coming from though.
06/13/2006 03:56:53 PM · #6
happens with jpeg compression sometimes. shooting jpeg or raw?
06/13/2006 04:32:02 PM · #7
What resolution did you shoot at, and does the effect show up at all sizes or just certain ones? Artifacts can show up with certain degrees of reduction (resampling), or by displaying at certain sizes which don't match the monitor's resolution well.
06/13/2006 04:41:31 PM · #8
I wouldn't worry about it. I wouldn't have noticed if you didn't say anything.
06/13/2006 05:04:19 PM · #9
Looks like it might be a combination of vignetting and 8-bit blue or blue channel color processing. The vignetting generates a continous range of tones outward from the center of the image. The bands are caused by discontinous jumps from one tonal shade to another where 8-bit color doesn't support any shades between.

If you can avoid the vignetting that would fix the problem. Another approach is to take the images in raw because I think that it supports 16-bit color with your camera. 16-bit supports a lot more shades of color and reduces the banding effect.

Message edited by author 2006-06-13 17:05:38.
06/13/2006 07:13:13 PM · #10
I shoot at the highest jpeg resolution possible, fine I believe its called. They were taken about 6:30 in the afternoon so I will try again today shooting in RAW. Typically, I resize to 640, and then save for web using the 150kb quality size. I have noticed it on a few others with different hues but the way these pics are composed, it really stands out to me.

BTW, it shows up on the full sized file as well.
06/13/2006 07:20:44 PM · #11
Originally posted by AzCKelly:

I shoot at the highest jpeg resolution possible, fine I believe its called. They were taken about 6:30 in the afternoon so I will try again today shooting in RAW. Typically, I resize to 640, and then save for web using the 150kb quality size. I have noticed it on a few others with different hues but the way these pics are composed, it really stands out to me.

BTW, it shows up on the full sized file as well.

What has happened to you is not all that unusual when you have color gradients sucah as in those images. Even though RAW will still eventually be converted back to .jpg for upload to the web it should be better. Just be sure to do all post processing in 16 bit mode before coonverting to .jpg if you can.
06/13/2006 09:40:53 PM · #12
Yeah, it most likely happened when you used the save for web function...thats not full resolution.
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