There has recently been an assertion that turning on Pre AF on Sony alpha cameras wrecks your battery life. I thought I’d check, using an a9, AF-S, Wide Mode, and the Son7 12-24/4 lens. I measured battery draw versus time, first with Pre AF on, and then with it off. Here’s the ‘scope shot: Time… [Read More]
Archives for July 2017
Sony 12-24/4 on a7RII vs Fuji 23/4 on GFX
This is part 11 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. I’ve been asked to compare the new Sony zoom on the a7RII against the Fuji 23 mm f/4 lens on the GFX 50s. This is not a fair fight. Let me count the ways: Prime vs… [Read More]
Sony 12-24/4 AF performance with a7RII
This is part 10 of a test of the Sony 12-24 mm f/4 FE lens. The test starts here. So far in this report, I’ve been using the Sony 12-24 manually focused. I have found the AF accuracy of the Sony a7RII to be outstanding, except in the case of one particular lens, the Batis… [Read More]
Lightroom performance improvements?
I recently saw this: https://blogs.adobe.com/lightroomjournal/2017/07/on-lightroom-performance.html Looks like the folks at Adobe are now recognizing the depths to which Lr performance has sunk. This is good news and bad news. The good news is that it looks like they’re going to make some improvements. The bad news is that they aren’t currently working on a performance… [Read More]
Sony 12-24 LoCA & focus shift at 18 & 24 mm
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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