a77 focus tracking test

Started Nov 8, 2011 | Discussions thread
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Keith Schmidt
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a77 focus tracking test
Nov 8, 2011

One of the things that most interested me in the a77 was the promised improved AF performance - both in terms of acquiring focus quickly, and maintaining it in continuous focus mode.

This is hardly a conclusive test, but I'm certainly encouraged by the results. Here's an 18 shot sequence shot this weekend, in 8fps mode, at f4, with my Sigma 70-200 2.8 HSM at 90mm:

http://keithinsp.smugmug.com/Family/a77-action-sequence-test/19969031_gHStgT/#1572805814_FfBc99Q

This is the whole sequence, straight out of the camera - every shot is there. Looks like it maintained focus for the whole sequence - I'm very happy with this.

Here are a few samples from the sequence (all resized to 1600 pixels to make it easier to upload):
Shot 1:

Shot 5:

Shot 9:

Shot 13:

Shot 18:

I've never had results anywhere close to this with my a700, a55 or Nikon D90 in the past...
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Keith
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 Keith Schmidt's gear list:Keith Schmidt's gear list
Olympus PEN E-PL5 Olympus E-M1 Olympus M.Zuiko Digital ED 14-150mm 1:4-5.6 Panasonic Leica Summilux DG 25mm F1.4 Olympus M.Zuiko Digital 45mm 1:1.8 +2 more
Nikon D90 Sony Alpha DSLR-A700 Sony SLT-A55 Sony SLT-A77
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