Banding in sky: Help! On my monitor --- I have clear blue-sky in a photo showing bands, each about a sixteenth-inch wide, extending about 1 1/2 inch away from the edge of the photo.

mdfenton

On my monitor --- I have clear blue-sky in a photo showing bands, each about a sixteenth-inch wide, extending about 1 1/2 inch away from the edge of the photo. It looks like a comb was dragged across the sky from the photo edge. There is a subtle change in blue hue between bands. I see it at 17% to 50% magnification, but not beyond 50% to 100%. I don’t know whether these bands would show in a print. Would anyone care to guess what this banding is? Is it noise? Many thanks.

mrpentaxk5ii

It would help if you posted a photo that we can download to let you know what we think the issue might be.

LoneRangeFinder Loc: Left field

Without seeing the download, my WAG would be over-sharpening.

CO

You should post a photo. Be sure the check the "store original" box.

chaman

What camera? Its IMPOSSIBLE to know with that kind of information given.

CHG_CANON Loc: the Windy City

When you post the photo, also tell us the processing you've applied between capturing the image and finding the problem. What software did you use? What actions did you take? What monitor are you using to view the image when you see the banding?

jackm1943 Loc: Omaha, Nebraska

mdfenton wrote:

On my monitor --- I have clear blue-sky in a photo showing bands, each about a sixteenth-inch wide, extending about 1 1/2 inch away from the edge of the photo. It looks like a comb was dragged across the sky from the photo edge. There is a subtle change in blue hue between bands. I see it at 17% to 50% magnification, but not beyond 50% to 100%. I don’t know whether these bands would show in a print. Would anyone care to guess what this banding is? Is it noise? Many thanks.

Is the photo an eight-bit or 16-bit file?

Rongnongno Loc: FL

Sevral possibilities...
Since you mention that the visibility depending on the magnification...
1) Hardware: Wrong/old driver (Unlikely)
2) Compression due to:
. a) Change of bit depth
. b) Down sizing
. c) Lossy compression (JPG usually)
3) You may need glasses (Joking)

GoofyNewfie Loc: Kansas City

Rongnongno wrote:

Sevral possibilities...
Since you mention that the visibility depending on the magnification...
1) Hardware: Wrong/old driver (Unlikely)
2) Compression due to:
. a) Change of bit depth
. b) Down sizing
. c) Lossy compression (JPG usually)
3) You may need glasses (Joking)

Kinds of bands:
Rock
Blues
Jazz
Big band...
https://www.slrlounge.com/remove-banding-photoshop/

n3eg Loc: West coast USA

Rongnongno wrote:

3) You may need glasses (Joking)

4)Fluorescent Sun

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

mdfenton wrote:

On my monitor --- I have clear blue-sky in a photo showing bands, each about a sixteenth-inch wide, extending about 1 1/2 inch away from the edge of the photo. It looks like a comb was dragged across the sky from the photo edge. There is a subtle change in blue hue between bands. I see it at 17% to 50% magnification, but not beyond 50% to 100%. I don’t know whether these bands would show in a print. Would anyone care to guess what this banding is? Is it noise? Many thanks.

Does it print with the banding?

It could very well be a low cost, general purpose monitor that lacks the bit depth to properly display the subtle gradations of color and tone in the sky. A 6 bit display will show this phenomenon easily, a true 8 bit not so readily, and a 10 bit display with a 10 bit card would not likely show it at all.

It could also be beyond the capability of a jpeg image - which is only 8 bit. But I'd bet you have a 6 bit display, especially if the print doesn't show the banding.

mdfenton

The banding is along the left border. Can't be seen above.

(Download)

mdfenton

The banding can be seen in the download.

Rongnongno Loc: FL

mdfenton wrote:

The banding can be seen in the download.

I do not see any banding but clumsy attempts to hide defects in the capture.
Checking for defects... No banding.

.

Blotch

(Download)

Wire or linear 'correction'
Wire or linear 'correction'...

(Download)

Many defects are now visible. No banding. Sensor needs cleaning too.

(Download)

mcveed Loc: Kelowna, British Columbia (between trips)

The "banding" is not banding at all. It is the result of using the spot removal tool in the heal mode to remove dust spots or other blemishes by sweeping the tool back and forth. This has "healed" the noise in the image and created smooth areas which appear to be banding or smudging. Banding is the result of over compression and doesn't look like this at all.