twodees wrote:
Anyone shooting with the Canon 600 II on an A9 with the Sigma adapter? Wondering what sort of AF performance I could expect with that combo and with the 1.4x as I have a chance of picking up a used A9.
Send a PM to Joshua @AGeoJO as he is using it a lot now. He has been very happy with it.
I sold my 600II earlier this year but before that I did use it on the A9. I used it with both the 1.4 and 2.0 TCs. I didn't do any BIF with it but I did shoot a fair amount of perching birds. The AF was very good for perching birds, it will start tracking them as they move on the perch with no issue. The biggest issue I had with adapted AF is going from distant focus to a much closer distance. It sometimes has trouble with that large of a focus shift and that becomes more common as you add TCs. Usually it is fine going from a close distance to a further distance. Using the limiter switch and having it pre-focused close to your intended subject distance gets rid of that problem.
IQ is amazing as expected.......
At 840mm...
Feb 27, 2019 at 03:31 PM
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