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Upgrade the memory of your 2018 Mac mini up to 64GB
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Sony A7R vs A7: Shutter Vibration at 280mm

In my review of the Sony A7R in Guide to Mirrorless is now documented an analysis of shutter vibration with the Sony A7R at 280mm.

Also added is an identical series showing shutter vibration with the Sony A7 at 280mm (none). The A7 has an electronic first curtain shutter, but the A7R does not. This makes all the difference.

The Leica 280mm f/4 APO-Telyt-R was used, mounting the rig using the robust tripod foot on the lens itself, thus acting as a proxy for all long and fast telephoto Nikon and Canon and other zooms and primes in the 200+ mm range.

Together with the 180mm analysis and 135mm analysis, these pages are “must read” for anyone contemplating using adapted lenses of 85mm and longer focal lengths of any brand on the Sony A7R.

A not so good result (actual pixels)
Sony Alpha A7R + Leica 280mm f/4 APO-Telyt-R
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Sony WH-1000XM4 Wireless Noise-Canceling Over-Ear Headphones (Black)
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