7D 100-400mm Calibration before and after firmware upgrade

Started Aug 11, 2012 | Discussions thread
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Mike Engles Regular Member • Posts: 238
7D 100-400mm Calibration before and after firmware upgrade

Hello

Here are some calibration results before and after the firmware upgrade
for my 7D/100-400 at 400mm

At 20m before Firmware

At 5m before Firmware

After Firmware at 20m

As far as I can see no change ar all. I use between +5 and +8 about the middle of the accepable focus range. Because of DOF there is no central point.

I have done it in 4 MA steps that show the trend as it is really impossible to discern single MA steps.

Mike Engles

Canon EOS 7D
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