In this auto focus comparison with the Sony A77, A580, and Canon 5D mark II, I’m going to see what these cameras can do in low light with little to know contrast. Last time I did this test it was quick and not the most thorough. This time I set up the the “lab” a little better with three different contrast points on the box, and then just the low contrast card board itself. I also put a clear ornament box to the right just to see what happens with that.
Check this out, and please fire away if you have any questions or comments!
The Bottom line with the AF:
The Autofocus on all three cameras performs very well. Not surprisingly the ~$2200 5D Mark II does the best on plan cardboard, with the ~$2000 A77 doing almost as good. The A580 performed about the same as the A77 on the cardboard, but its not equipped with an AF Illuminator like the A77. It relies on the flash for this, and I did not use that.
I hope you guys got something out of my efforts here, and thanks for your patience. As I continue to learn and review some of the best equipment available today for photographers, I’m going to hit a road block here and there. Often these simple “lab” type test will prove which camera, lens, or equipment performs best in a given situation. In this case, poor lighting a low contrast subjects
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