Weird Artifacts when rotating

Question

After doing a very small rotation to get the horizon level. Doing so shows a "grid" of sharper and blurred boxes. It is repeatable in different images and seems to matter how much of a degree the image is rotated. I'm not sure if this is just an unfortunate side effect or an actual issue.

davescm · Accepted Answer

Ah - that explains that - and yes I can see it.Can you try something? Go to Preferences - Camera Raw and turn off Use Graphics Processor. Then open your image and repeat the rotation above.Dave

Trevor.Dennis · Answer

Are you referring to the horizon on the left of the image? If not, can you tells specifically where you are seeing the problem?

I don't actually know what interpolation ACR uses when resampling RAW files, but you could try leaving the horizon skewed untill you open the image inside Photoshop, and using Free Transform to straighten it. That way you can control what Interpolation is uded from the Options bar.

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