sploo wrote in post #18251219
I'm not trying to be aggressive/provocative, but surely an understanding of standard deviation and a claim that Canon is selling mis-calibrated gear are mutually exclusive?
If components and products will have some deviation from perfect then it's inevitable that a combination of two samples of gear (whose deviation combines unfavourably) may show a noticeable problem.
The only way to avoid that would be to have all samples rolling off the production line with a maximum deviation small enough that (for all practical purposes) every combination is perfect. But then the costs would go up hugely.
I'm not trying to be aggressive/provocative, but surely an understanding of standard deviation and a claim that Canon is selling mis-calibrated gear are mutually exclusive?
If components and products will have some deviation from perfect then it's inevitable that a combination of two samples of gear (whose deviation combines unfavourably) may show a noticeable problem.
The only way to avoid that would be to have all samples rolling off the production line with a maximum deviation small enough that (for all practical purposes) every combination is perfect. But then the costs would go up hugely.
I did not take it that way and I stopped caring long ago. I get beat up a lot for my view on this but I won't change my mind. The work order said lens had to be calibrated so it was defective. That is pretty black and white to me. I worked in manufacturing for 35 years and you don't want know what goes on some days when it really hits the fan. It was much better by the time I retired because companies had to improve due to global competition.
