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My M9 returned from Solms having been through the M9-P cosmetic surgery. Naively I thought all would be well, as it should be as perfect as it would ever be. I went to the Ansel Adams exhibition, and took the camera with me.

 

I was a bit surprised with the patterns in the sky. They look like a sandy beach!

 

Any idea of the cause?

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Edited by visoflex
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It could be due to a faulty SD card/reader. It looks as if one or more of the least significant bits of the image data are missing. Have you tried a different card?

 

The exhibition was superb. I visited twice, once at the beginning and again at the end of the last week.

 

 

Bob.

Edited by gravastar
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Your camera is probably fine. Did you make some adjustments to the photos after they came out of the camera? It looks like you processed (or saved) the photos with a very low quality jpeg setting, so most of the data was lost.

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Guest rivercityrocker

That's called banding. It's usually caused by over-processing a low-quality JPG. The M9 should definitely have enough bit-depth and dynamic range to handle a simple blue sky.

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Well done that man!

 

I went back and checked the DNG's and they were fine. The problem came on the export from DNG to JPEG. The quality slider had been set to zero for an internet forum job, and I had forgotten to reset it.

 

D'Oh!!

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This looks a lot like banding induced by post processing. My guess is that the blue sky was either brightened, saturated or maybe even both. Then it depends on the color space of the exported JPG.

 

Without seeing the original DNG file it is hard to give a definitive diagnosis of the problem. Any chance you can post it to dropbox or something?

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