Viggo said:
The reason why I'm asking is if this is a 24-70 mk2 issue, it's pretty useless... this is a very expensive lens and not that fast and should be almost no sample variation... I'd be pretty upset I think...
Agreed, and even though Canon had copy variability with the original, you'd think they'd have learned from that...
I was very interested in this lens when it was announced, but instead of pre-ordering it, I put those funds toward my 600 II. Now, I'm even more happy that I did that. I'm now actually considering the 50/1.2L instead of the 24-70 II.
j1jenkins said:
-Mount the lens align target on a tripod and level it out. I get it as close as possible to MFD.
That's a bad idea, unless you're always shooting at the MFD. The adjustment at the MFD is often quite different from the adjustment at other focus distances, and once you get a ways out from the lens, the adjustment values tend to get much more stable. That is why LensAlign recommends 25x the focal length, and Canon recommends 50x the focal length (i.e., about 8 ft and 16 ft, respectively, for a 100mm lens).
The keys to getting consistent results are a stable tripod and LOTS of light. Personally, I have 450 W of light pointed at the target from a distance of a little over 1 foot.