Please, I have a question for you experts about image quality of Nikon D7100's NEF files opened in Camera Raw.
I have examined a D7100 NEF file, loaded in Camera Raw 7.4, and if magnified at higer zoom it is possible to see maybe some troubles in demosaicing.
You can clearly see that the inclined lines are demosaicized in blocks of 2x2 pixels. This is true regardless of the sharpness settings.
When you open this file in Nikon CaptureNX2 the problem is not present.
Please, see images linked above
Setting sharpness to 0%
Adding more sharpness:
The file is downloaded from site DPReview, is a test shoot for a camera comparative.
I have noticed the same thing, more or less, opening other NEF files (from Nikon D7000, D5200, D3200 except D800).
With this issue, it seems is not taken advantage of the resolving power of the lens or the sensor resolution.
I would like to ask if this is really a problem or if there is some setting/configuration to manage it.
Thank you very much and sorry for the bad English writing.
Yes, I noticed this issue on various Canon compacts a while ago. From my remembering, it was introduced (or worsened) with algorithm change from PV2003 to PV2010, but not quite sure. There's nothing you can do I'm afraid.
There is no perfect demosaicking method - one is better in certain conditions and worse in other ...
At Vit said, demosaicing is a land of tradeoffs.
This particular issue is not directly related to PV 2003 vs 2010; however, the detail-oriented sharpening of PV 2010 will accentuate the blocks compared to PV 2003. The underlying issue is the nature of how ACR's current demosaic approach handles diagonally-oriented features. We are aware of it and of course it is a candidate for improvement in the future.