All you have to do is call Canon Technical Support and make them aware of your problem and they will gladly give you a case number and tell you that you will receive an email around the end of October letting you know that they are sending you a package to ship your camera back to them, insured and free of shipping costs (basically it won't cost you a dime to get your camera fixed). Personally, I don't know what else you can expect from them. At least they are doing a recall which speaks volumes to me about the company. I went through the Leica M8 fiasco earlier this year when Leica knew what the problem was with the M8 (hot mirror) and instead of issuing a recall which would have let them replace the defective component on the sensor, they opted not to do a recall and to graciously allow M8 owners to choose two special screw on filters which have to be mounted on every lens instead. If an owner has more lenses that don't match the size of the filters that were initially chosen, then additional filters have to be bought, and they are not cheap. That's when I sold my M8, to a person aware of the problem and thought it was no big deal for a special filter to be mounted on a two or three thousand dollar piece of glass. If Canon had done something like this, then I would have sold my MK III and all my lenses and jumped ship, but they didn't. They are doing exactly what they should be doing, IMO.
As far as admitting to a problem and a fix, they first had to do testing, which was probably very extensive and then figure out the best way of fixing the problem which, in this case, is accepting responsibility and fixing the problem free of charge. Sure, it has taken awhile to get to this point but, can you understand what they are having to do? They have to modify assembly of all new cameras being manufactured as well as fixing the MK III's already sold. All I'm saying is it is more than problem identified, send camera in for repair, camera repaired, everyone is happy. I for one, am much happier to have waited this long for Canon to figure out the problem and come up with the best possible way for the consumer to get their camera fixed than to have them do something along the lines of what Leica did with the M8. But, I will admit that I was beginning to wonder if I was going to have another nightmare like I did with Leica's M8.
Let's hope that the fix will put to rest the AF problem, in Servo as well as single shot.
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Mark-M