I’ve been reporting on the modulation transfer function results from some lens/sensor testing that I’ve been doing. I few days ago, I show you some work that I’d done with the Nikon 70-200 f/2.8 GII ED on the Nikon D810 to the Sony 70-200 f/4 G OSS FE on a Sony a7RII. For those tests,… [Read More]
Taming the a7RII EVF/LCD autoswitching
The automatic EVF/LCD switching on the Sony alpha 7 cameras is a real pain in the neck for me. When you bend over to have a good look at the LCD screen on the back of the camera, especially if you’re wearing a hat, the screen goes dark. This “feature” also keeps the camera from… [Read More]
Visual effects of dynamic range — a7RII
There was some interest on DPR on what difference various amounts of dynamic range made in a picture. This post is an effort to provide some examples. In order to see the effects of dynamic range, you need a high dynamic range scene. If you’re shooting a subject with low dynamic range, almost any modern… [Read More]
MTF testing of 70-200mm lenses
Imatest, the company who makes the software that I use to measure the modulation transfer function (MTF) of camera/lens combinations, expects you to fill the frame with one of their test charts, carefully align the camera so that the lens axis in perpendicular to the chart plane (or, equivalently, so the chart and sensor planes… [Read More]
Sony 70-200/4 on an a7RII, Nikon 70-20/2.8 on a D810
Last week, I posted some images that compared the performance of the Nikon 70-200 f/2.8 GII ED to the Sony 70-200 f/4 G OSS FE when both were mounted to a Sony a7RII. Part of the controversy related to whether eyeballing images was a useful way to compare lenses when MTF curves were available. Well,… [Read More]
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