« on: April 27, 2012, 10:24:28 AM »
Just out of curiosity, do you actually own a Mark III because your analogy is nonsense. Lens microadjustments only need to be performed in rare cases. Usually the camera and lens fit within a tolerance of each other and those microadjustments aren't necessary. The fact that there does seem to be a case for those adjustments to be made suggests that there may be something wrong with the Mark III that it didn't fit within those tolerances. And by the way, I'm not the first person to report the soft focusing issues the the Mark III. Instead of being a Canon cheerleader and attacking people who discover a potential problem, perhaps you should consider the reality that large corporations sometimes do cut corners in the name of profit.
On both my 7D and 5D3 as well as on rented 5D2 in the past three years I had to do AMFA on almost every lens. Some needed only ±2 while others as much as 15. So criticizing the sharpness without performing it is like accepting a speeding ticket from an uncalibrated speed gun. You wouldn't do that, right?
Another thing, in regards to low light shooting, is that the 5D3 is rated to operate at 1-20EV while the 1D4 and 1DX are rated to 0-20EV. That could also have had a negative impact on your findings at the club. Nothing wrong with the camera.
The 61-point AF sensor of the 5D mark iii has twice the low light sensitivity as the 1D Mark IV’s 45-point AF sensor (EV -2 vs. EV -1).