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#1
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I think finally I found banding in a D200?
Rita,
Therte is no banding in this picture. In the small samlpes of the photo, (hoping that I have understand what you mean) that looks like banding in the horizontal white tube and in the yachts decorative lines, is an effect generatated from resizing the image and not form the camera. If you dowload the full size image (it is 9 Mb) I believe that you realize that there is no banding at all. The above effect can be visible even in full size pictures when the photo includes horizontal lines with a slight inclination from 0 degrees. It is the same effect that generates "moire" and all cameras produce it (is a product of scan). More intence is this as lower is the CCD's resolution in Mpix and as smaller is the inclination of the lines from the horizontal. From the other hand, I believe that this picture have more than normal luminance noise. The exif shows ISO200, T=6sec, NR=OFF. At 6 sec the long exposure NR should be ON. Also the picture looks like it have a post process in levels. If this is true (I believe it is), this explain the increased level of noise in the mid shadow areas. -- Dimitris M Here is a picture from a gentleman by the name of Cynicor in the group that posted pics in a thread titled "Treasure Island night shots." http://trupin.smugmug.com/gallery/1279919/1/60120634 Is this "banding" or is it random noise with a pattern? |
#2
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I think finally I found banding in a D200?
I thought the link I posted was to the full size image (8.43MB)?
No, it was to the 600px x 402px "medium" version. Yes, I was looking at the full size image at 100% and what I am seeing are vertical lines above the brightest light above the boathouse. I didn't see any banding there. There are only some vertical stripes that are the rigging of the masts and the masts, in interference with the star stripes from the light and the iris (the photo was shooting at f8). -- Dimitris M ????????? ?? ????? ??? ??? ??? ????????? |
#3
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I think finally I found banding in a D200?
Dimitris M wrote:
I thought the link I posted was to the full size image (8.43MB)? No, it was to the 600px x 402px "medium" version. you will see banding in 100% (select Original size), just above overblown area on left side, above and below moon (this one is clearly visible) and around bridge. B. |
#4
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I think finally I found banding in a D200?
In the moon , yes it is banding.
In other areas, there is some, but soft and difficult to detect, cause of the luminance noise. Above the stong light, there can not be detected cause the interference I have already mentioned, but left and right of the light it can be detected. From the above the only one that could be visible in a 50% print is that in the moon. Seems that indeed this D200 is "infected". -- Dimitris M you will see banding in 100% (select Original size), just above overblown area on left side, above and below moon (this one is clearly visible) and around bridge. |
#5
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I think finally I found banding in a D200?
In message ,
"Rita Ä Berkowitz" ritaberk2O04 @aol.com wrote: I thought the link I posted was to the full size image (8.43MB)? Yes, I was looking at the full size image at 100% and what I am seeing are vertical lines above the brightest light above the boathouse. Granted they aren't that noticeable, but I did notice he was shooting at ISO 200 and I am curious if it would be more pronounced at higher ISOs. I see banding throughout the image Every fourth column of pixels is darker than the three between it; an amplifier calibration issue, most likely. At least some of the problem is an offset, and not scalar, because in those 1/4 of the columns that are darker, many are clipped to zero. If you cut'n'paste the image into photoshop, change the levels to gamma 2.7, and zoom into the top of the halo area above the moon, you'll see that every fourth column has an excess of almost-black pixels. These, I assume, are clipped in the WB process and only get some luminance from the demosaicing. Run a 90 degree motion blur of 200 pixels on the entire image, and you will see the bands in every tonal range. -- John P Sheehy |
#6
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I think finally I found banding in a D200?
wrote:
I see banding throughout the image Every fourth column of pixels is darker than the three between it; an amplifier calibration issue, most likely. There is definitely (very noticeable) vertical banding, but we have sort of a terminology problem; that's not the "banding" that has caused all the controversy with the D200. Still, there are so many different kinds of "banding" reported with this camera, it's hard to keep up. It makes me glad I wasn't needing a new camera when it came out. It's very unlike Nikon to have early-release problems of this magnitude. I'm wondering, was this camera made after Nikon's "fix" for the problem? -- Jeremy | |
#7
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I think finally I found banding in a D200?
In message ,
Jeremy Nixon wrote: wrote: I see banding throughout the image Every fourth column of pixels is darker than the three between it; an amplifier calibration issue, most likely. There is definitely (very noticeable) vertical banding, but we have sort of a terminology problem; that's not the "banding" that has caused all the controversy with the D200. The banding I see all over has *exactly* the same geometry as the banding above the clipped highlights. The darkest lines in the bands above the light are also the darker lines above and below in the darker, flatter areas. The clipping-related lines *below* the lights are the only exception to the pattern. Obviously, some kind of blooming or readout "memory burn" is occuring. The problems are somewhat related. Still, there are so many different kinds of "banding" reported with this camera, it's hard to keep up. It makes me glad I wasn't needing a new camera when it came out. It's very unlike Nikon to have early-release problems of this magnitude. There are a few types of banding; there is vertical and horizontal, scalar and offset, and repeating (within the image, and frame to frame) and random. I don't know if anything short of a replacement is going to remove that memory effect. It may be possible to calibrate the general banding effect, though. -- John P Sheehy |
#8
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I think finally I found banding in a D200?
Jeremy Nixon wrote:
wrote: I see banding throughout the image Every fourth column of pixels is darker than the three between it; an amplifier calibration issue, most likely. There is definitely (very noticeable) vertical banding, but we have sort of a terminology problem; that's not the "banding" that has caused all the controversy with the D200. Still, there are so many different kinds of "banding" reported with this camera, it's hard to keep up. It makes me glad I wasn't needing a new camera when it came out. It's very unlike Nikon to have early-release problems of this magnitude. I'm wondering, was this camera made after Nikon's "fix" for the problem? It's a Japanese model. Got it in late Feb, but I don't know offhand which model numbers were unfixed. If anyone wants to look at the NEF, it's an 8+ MB ZIP file on my slow site. http://www.trupin.com/Banding.zip. Enjoy! |
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