Brian Taylor, the Executive Director of the Center for Photographic Art, arranged a video crew to capture a half-hour interview that he conducted with me at the Hartnell College Art Gallery during their exhibition of images from This Green Growing Land series. Here’s a nearly-final version, rezzed down to 720p (it’s still nearly half a… [Read More]
Archives for October 2017
Sony 100-400 vs Nikon 80-400 at 200 mm
This is the fifth in a series of tests on the Sony 100-400 f/4.5-5.6 GM zoom. The series starts here. This continues the test in the previous post, but at 200 mm focal length instead of the 100 mm of that post. Test conditions. Sony 100-400 mm f/4.5-5.6 GM OSS on the Sony a7RII and the… [Read More]
Sony 100-400 vs Nikon 80-400 at 100 mm
This is the fourth in a series of tests on the Sony 100-400 f/4.5-5.6 GM zoom. The series starts here. The tests that compare two lenses visually have proven to be popular. While not as definitive as my quantitative testing, they do give an overall impression, and are easier to interpret for many because they… [Read More]
Sony 100-400 AF performance with a7RII
This is the third in a series of tests on the Sony 100-400 f/4.5-5.6 GM zoom. The series starts here. I have found the AF accuracy of the Sony a7RII to be outstanding, except in the case of two lenses. One is the Batis 85, whose longitudinal chromatic aberration (LoCA) seemed to cause the AF… [Read More]
Sony 100-400 OOF PSFs
This is the second in a series of tests on the Sony 100-400 f/4.5-5.6 GM zoom. The series starts here. There are two pieces to bokeh. The first is what things look like when they are well out of focus (OOF), and the second is how the transition from OOF to in-focus happens. The second is… [Read More]