I've got a D800E shot of a large brick building taken from some distance away. When I open the NEF file in NX2 there is no moire at all. If I resize it to 1920 on the longest side and save as a TIFF there is still no moire at all.
If however I open the NEF file in NX2, save it as a full-size TIFF, then resize the TIFF to 1920 in CS6, there is heavy moire on some of the brickwork.
Very strange indeed.
#1. "RE: Moire - interesting quirk" | In response to Reply # 0Luke_Miller Nikonian since 19th Apr 2006Mon 24-Sep-12 04:02 PM
Perhaps the moire is not actually in your image, but results from interaction between the image and your display. Michael Reichmann talks about thar here. Scroll down to the moire section.
#3. "RE: Moire - interesting quirk" | In response to Reply # 1Mon 24-Sep-12 08:19 PM | edited Mon 24-Sep-12 08:26 PM by Gromit44
>Perhaps the moire is not actually in your image, but results
>from interaction between the image and your display.
I thought about that Luke but if it was a clash with the monitor's resolution (which is 1920) surely both of the resized 1920 files (made by NX2 and CS6) would show moire. The NX2 file doesn't though - not a trace of it.
#2. "RE: Moire - interesting quirk" | In response to Reply # 0
I think it's becoming clear that with images of this high resolution, resampling algorithms can actually cause moiré. We've seen this here when images didn't exhibit moiré on screen but did in print after the print driver downsampled to print resolution, which is really a worst-case scenario. I've also seen images that expressed moiré when viewed at 50% in one viewer, and none at 50% in a different viewer, both on the same screen.
Bottom line, you've got to be careful how you downsample.
Larry - a Bay Area Nikonian
My Nikonians gallery
#4. "RE: Moire - interesting quirk" | In response to Reply # 2Mon 24-Sep-12 08:24 PM
Larry - yes, it must be something to do with the algorith used by CS6 to resize.
I don't think the 1920 resize made in NX2 would show any moire when printed. The one made in CS6 definitely would though.