I have AFMA my 5D3 and 24-70mm f/2.8 using FoCal v1.6. I’m getting variations on the results and wondering if is this normal? I've searched the internet and the FoCal site for comparison but none that I could find except from this forum. I had a similar problem some time back and it boiled down to two things:
Comments are welcome.
- I had the center mast of the tripod up and that caused some sway. The camera should be absolutely steady.
- I was doing it in the morning and the sun was going in and out of the clouds so variable light...
Other than that, was your battery completely charged?
Batteries were fully charged. The camera was mounted on a video tripod with fluid head and was weighted further by a 10 lb barbel. The height of the target (bullseye), and the center of the lens were the same. What concerns me is I am not getting a consistent sharpness 'reading'. Shouldn't I get the same resolution 'reading' even if the distance are varried?
@neuroanatomist: I have EV of 11.6