Search Results for: a7R shutter shock

We saw in the preceding post that, once we deep-sixed Lightroom’s capricious sharpening, the a7R and the D810 offered similar resolution (as measured by MTF50) in one direction and that the D810 did somewhat better in the other, when the target was illuminated with electronic flash, and we used trailing curtain synch on the a7R… [Read More]

[Warning: the data presented in this post is highly misleading because of he way that Lightroom sharpens during raw development, For a truer picture, read the next post.] There have been discussions on the ‘net recently about the proposition — considered proven by some — that the resolution of the Nikon D810 is superior to… [Read More]

This is a continuation of the real-world, informal testing of the Sony/Zeiss 55mm f/1.8 Sonnar FE (Zony 55) and the Zeiss 55mm f/1.4 Otus ZF.2 lenses on the Sony alpha 7R (a7R) and Nikon D810 cameras. The overall scene is in the previous post. In this post, I’ll present edge captures at various apertures from… [Read More]

For the past few days, I’ve been doing tests of image sharpness with the Sony 70-200 f/4 OSS FE lens mounted on a Sony a7R and a a7II camera. I’ve been using a really sturdy tripod — the RRS TVC-43 — and head — the Arca Swiss C1 Cube — for the testing when I’ve… [Read More]

Two days ago, I posted data for the Sony a7R and a7II paired with the Sony 70-200mm f/4 OSS FE lens. I did tests on a tripod and handheld, and with and without image stabilization. Slicing and dicing the data another way, we can see when the a7R shutter shock degrades sharpness to a7II levels,… [Read More]