D7100 + 80-400 AFS moire

Started Mar 27, 2014 | Discussions thread
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Entropius Veteran Member • Posts: 4,185
D7100 + 80-400 AFS moire

This thread isn't a complaint thread, first of all -- it's more to brag on how good this lens is. I'm willing to put up with a little moire in exchange for more acuity, which means less sharpening, which means less noise.

I use the D7100 + 80-400 AFS to shoot birds; it's pretty much stuck at 400 f/5.6.

Everyone knows that the worst things for provoking moire are fine lines near the Nyquist frequency of the sensor. Unfortunately, that's what Nature has decided to make feathers out of, and robin feathers in particular contain a lot of detail that can provoke moire.

The conventional wisdom is that moire only shows up in shots made with great glass -- preferably high quality fast primes stopped down -- shot at a narrow range of apertures. One normally doesn't think of variable-aperture telephoto zooms shot wide open handheld on one's lunch break, but that's exactly what this shot was:

This is a Lightroom conversion with default sharpening settings. Here's the camera jpeg:

This is clearly a mess -- but a mess that means that the lens is brilliantly sharp. Here's the shot cropped only a little, where the pixel-level mess is barely visible

 Entropius's gear list:Entropius's gear list
Nikon D7100 Nikon AF-S Micro-Nikkor 105mm f/2.8G IF-ED VR Sigma 18-35mm F1.8 DC HSM Art Nikkor AF-S 300mm f/4E PF ED VR
Nikon AF-S Nikkor 80-400mm f/4.5-5.6G ED VR Nikon D7100
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