This is part 9 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. I tested the Sony 12-24 mm f/4 FE lens for on-axis longitudinal chromatic aberration (LoCA) and focus shift. I used my computer controlled focusing rail and a low-contrast inkjet-printed slanted edge target. A quick review of… [Read More]
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Fuji 23/4 AF performance on GFX — high contrast inkjet target
This is the 68th in a series of posts on the Fujifilm GFX-50S. The series starts here. In these tests, I found that the AF consistency and accuracy with a low-contrast target was good, but not great. I decided to resun the tests with a higher-contrast inkjet-printed target. The specifics: ISO 100 AF-S Higer… [Read More]
AF accuracy of Fuji 23/4 on GFX
This is the 64th in a series of posts on the Fujifilm GFX-50S. The series starts here. Yesterday I reported on longitudinal chromatic aberration (LoCA) and focus shift with the Fuji 23 mm f/4 lens on the GFX 50S. I found the focus shift to be minimal, and the LoCA about average for a high-quality… [Read More]
Fuji 23 on GFX, Batis 18 on a7RII — kickoff
This is the 60th in a series of posts on the Fujifilm GFX-50S. The series starts here. I have received copies of the Fuji 63 mm f/4 GFX lens, and also the 100 mm f/2. I’ll be testing both of them. I always like to do comparison tests for qualitative things, and I have a… [Read More]
Sony a9 ES vs EFCS reset details
This is the 14th in a series of posts on the Sony a9. The series starts here. In this post, I reported on the details of the Sony a9 electronic shutter (ES) read operations, and found that the columns were read in groups of 12, both in single shot and continuous modes. Today I’d like… [Read More]
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