My whole website, including this blog, was out of service from about 10:00 PDT last night until 7:00 this morning. It was my fault. I wasn’t paying attention to the disk storage being used by backups and the site ran up against its disk storage limit. It didn’t fail gracefully; everything just came to a… [Read More]
Archives for March 2020
Metabones 1.26x Expander on GFX 100 with Otus 55
Three or four weeks ago I received a Metabones 1.26x expander for Nikon F-mount lenses on Fujifilm G-mount cameras. This is an adapter with glass — and quite a bit of glass, at that — inside. It increases the focal length of any lens attached to it by a factor of 1.26, and expands the… [Read More]
Camera differences in Adobe Color Profile
In the last post, I showed that, at least in the default general-purpose settings, Lumiriver Profile Designer did not do a particularly good job of producing the same color from raw files from three different cameras, even though with the reproduction defaults (except for 2.5 dimension LUTs) it did pretty well with at least one… [Read More]
Calibrating out the camera when making color profiles
In this test and this one, I showed that you could get the colors of developed files from the Sony a7RIV, the Nikon Z7, and the Fujifilm GFX 100 reasonably close if you used Lumariver Profile Designer, and the reproduction style. The a7RIV and the Z7 were remarkably statistically accurate and even closer to each… [Read More]
Sony 20/1.8 vs Batis 18/2.8 — Siemens Star
I’ve been asked to compare the Sony 20mm f/1.8 to the Zeiss Batis 18 mm f/2.8. Here’s a test with both lenses mounted on an a7RIV aimed at a low-contrast Siemens Star at about 8 meters for the 20, and about a meter close for the 18, with the star in the center and the… [Read More]