This is the first post in a series on the Sony alpha 7 Mark III, aka the a7RIII. I’ve received some complaints that it’s hard to navigate in this blog, what with its couple of thousand posts and many multi-part series. I’m trying something new. I’ve created a Category called a7RIII. You should be able to… [Read More]
Archives for 2017
Sigma 35/1.4 LoCA on D850 revisited
This is the 30th post in a series of Nikon D850 tests. The series starts here. There was some discussion in the comments to the previous post about the way I’m presenting the results of the longitudinal chromatic aberration (LoCA) testing when I use the Nikon D850 Focus Shift Shooting (FSS) feature to step the focal… [Read More]
Sigma 35/1.4 LoCA on D850
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]
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]
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