Perhaps the fault is corrected without comment from Canon with newer copies. Unfortunately, however, is also to be assumed that a few bad copies in circulation of shipping sending back and re-sending are multiply negatively noticed. Perhaps the comprehensible reports of malfunctions in other users have led to hypersensitivity. I can at least for the three EOS 70d which I could test detect any malfunction.
Introduction, I called ready a few points that have led me to the decision to buy. Subsequently be mentioned more positive points which I find very convenient. This includes, in the on- grid in the viewfinder and the water truck icon. The latter could have been a little bit more dominant. The HDR feature is a nice addition, although the results are not comparable with the self-billed shooting. And besides, the master function of the internal flash is very nice to use with no additional effort my speed 430EX II as a slave.
The purchasing decision characteristics reveal in practice other positive side effects. The vari-angle display interested me primarily because of better control of ground-level perspective in macro shooting or the touch feature to make adjustments more quickly. In addition, however, the display can rotate to a position where it is protected from mechanical influences. The touch capability allows you to set the focus point during the recording, and the zooming and browsing in playback mode. Of course there is more money for higher quality cameras, but not more powerful, which has such a functional display.
Just a pity that Canon always omits one or another function in the various models. Because I also have an EOS 6d and sit there the integrated GPS receiver on smaller tours regularly. He would also like may be present in the EOS 70d to increase its universal fit to travel.
Why I buy a 70d, if you already have a 6d? Some points I mentioned already. It is faster, the more features and the rotary / folding screen is for ground-level macro shots of immense help. The existing APS-C lenses are too good to me to resell under price, and any Crop Sensor is the super telephoto more effective than the use of a teleconverter on full frame. The 6D is also further my low-light specialist and has more potential exemption.
I am very satisfied with the purchase of the EOS 70d and find it very unfortunate that I have hesitated due to the above problem representations of the central AF sensor in the network as long with the purchase.