Comments on: Just Lucky Duckie … And My First Day with SONY https://www.birdsasart-blog.com/baa/2019/01/27/just-lucky-duckie-and-my-first-day-with-sony/ The blog of bird photographer Arthur Morris Sun, 07 Apr 2019 12:29:51 +0000 hourly 1 https://wordpress.org/?v=6.8.3 By: Mike Ross https://www.birdsasart-blog.com/baa/2019/01/27/just-lucky-duckie-and-my-first-day-with-sony/comment-page-1/#comment-1761237 Tue, 29 Jan 2019 21:34:36 +0000 http://www.birdsasart-blog.com/?p=59411#comment-1761237 In reply to Arthur Morris/BIRDS AS ART.

In terms of acquisition and tracking I see no difference. But there is a difference in terms of buffer depth and rolling shutter problems. This article explains these issues: (https://mirrorlesscomparison.com/sony-vs-sony/a7riii-vs-a9/#3-Autofocus-performance) Hope this helps.

Best,

Mike

]]> By: Phil Thach https://www.birdsasart-blog.com/baa/2019/01/27/just-lucky-duckie-and-my-first-day-with-sony/comment-page-1/#comment-1761224 Mon, 28 Jan 2019 21:35:57 +0000 http://www.birdsasart-blog.com/?p=59411#comment-1761224 I’m very interested to hear your thoughts on the a9 and the 100-400, especially with the 2x tele. Specifically, because I wouldn’t think a camera could autofocus with a 2x tele on a f/5.6 lens. If the a9 can focus well with the 100-400 and 2x tele, I’m impressed! I figured Sony’s a9 and 2x might require the 400 f/2.8 to function well.

I would submit a guess on your focus point choice but my answer mirrors Tony Z’s. I know my Nikon bodies struggle on any lens and tele combo that adds up to f/8. Be it f/4 x 2 or f/5.6 x 1.4. You can move the focus point away from the center but when you do locking focus is hit or miss, mostly miss.

Best,

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