a77 FW 1.03 Buffer Performance and Dial Responsiveness Tests

Started Oct 14, 2011 | Discussions thread
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a77 FW 1.03 Buffer Performance and Dial Responsiveness Tests
Oct 14, 2011

My a77 pre-loaded with 1.03 firmware arrived on my doorstep this morning in Tokyo, Japan. After taking my commemorative DSC00001 shot, I made a couple of videos showing dial responsiveness when changing aperture, and SDHC card write performance during the 12 fps mode.

(1) http://www.youtube.com/watch?v=IgS2FYgU21s

This video shows the responsiveness when using the dial to change aperture. I don't think it is so laggy as to get in the way.

(2) http://www.youtube.com/watch?v=4pBuLTSZTaU

This video shows the write speed of the SD card in 12 Fps mode. The card used is a Toshiba 16GB UHS-1 SDHC ( http://www.amazon.co.jp/gp/product/B004GJW2BQ ), which is rated for 95MB/s read and 80MB/s write. Take a look at the red write indicator lamp in the video to judge how long it takes to clear out the buffer under the different scenarios:
(a) Shooting until buffer full and release
(b) Shooting until buffer full and shutter held down thereafter
(c) Shooting until buffer full and small bursts during write thereafter

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