This is the 29th post in a series of Nikon D850 tests. The series starts here. In the preceding three posts, I looked at the on-axis sharpness and longitudinal chromatic aberration (LoCA) of the Sigma 135 mm f/1.8 ART, 85 mm f/1.4 ART, and 105 mm f/2.8 macro lenses on the Nikon D850. Now I’ll do… [Read More]
Archives for November 2017
Sigma 85/1.4 LoCA on D850
This is the 28th post in a series of Nikon D850 tests. The series starts here. In the preceding two posts, I looked at the on-axis sharpness and longitudinal chromatic aberration (LoCA) of the Sigma 135 mm f/1.8 ART and 105 mm f/2.8 macro lenses on the Nikon D850. Now I’ll do the same test with… [Read More]
Sigma 105/2.8 macro LoCA on D850
This is the 27th post in a series of Nikon D850 tests. The series starts here. In the preceding post, I looked at the on-axis sharpness and longitudinal chromatic aberration (LoCA) of the Sigma 135 mm f/1.8 ART lens on the Nikon D850. Now I’ll do the same test with the Sigma 105 mm f/2.8 F-mount… [Read More]
Sigma 135/1.8 LoCA on D850
This is the 26th post in a series of Nikon D850 tests. The series starts here. I’ve just purchased a bunch of Sigma lenses, thanks to the D850. Why’s that? It’s a somewhat-complicated chain of reasoning: Because the D850’s Focus Shift Shooting (FSS) feature as the potential to completely change the way I work with static… [Read More]
a7RII superhot pixel frame-to-frame consistency
This is the ninth in a series of posts on the Sony a7RIII (and a7RII, for comparison) spatial processing that is invoked when you use a shutter speed of longer than 3.2 seconds. The series starts here. Bill Claff, who I greatly respect, commented on yesterday’s post to the effect that he would look at a more… [Read More]
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