snapsy
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Upload & Sell: On
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| p.1 #1 · D800 back from El Segundo..detailed Left AF results | |
They had the body for a total of 5 business days, so very quick turnaround.
The center AF fine-tuned at -5 to -10. The Left and Right fine-tuned at -15 to -20. So like others have reported, the Left/Right asymmetry appears to have been corrected at the expense of the center. But unlike others the compromise I see on mine might be within what I consider acceptable (just barely)
Here is a full comparison of Left/Center/Right at AF tune values of -5, -10, -15, and -20. I didn't do zero because it was obvious from the progression that it would only get worse below -5. Distance to chart was 4 feet 7 inches.
Here are my observations from this full data set:
.....Center AF Point: Sharpest at -10, worst at -20
.....Left AF Point: Sharpest at -20, worst at -5
.....Right AF Point: Sharpest at -15, worst at -5
Here are my conclusions from the above observations:
.....The Left/Right AF points are roughly symmetrical (plus/minus 3 AF tune ticks)
.....The delta between the Center and Left/Right is about 7.5 AF tune ticks
Here is how I will configure my D800+24G based on the above conclusions:
.....For general use I will configure my body for -16 (compromise)
.....For Left/Right use I will configure my body for -20
For magnification reference, here is the full frame of the scene from which these 100% crops were taken. My 5000K LED light was moved between Center/Left/Right for each sequence.
Full Scene
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