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Does anybody have any experience with this lens?  DxOMark rates it highly, "This makes it the 5th best APS-C zoom lens tested on the Canon EOS 7D!"

http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Sigma-17-70mm-f2.8-4-DC-Macro-OS-HSM-C-Canon-review-The-Above-Standard-Zoom

As I do a LOT of video, I'm most interested in OS (Sigma) noise vs. Canon IS noise.  And yes, I know an external mike is best.

http://www.youtube.com/watch?v=RKAjKfF8OS4&noredirect=1

Not a lot on YouTube about this NEW "C" version. I'm looking for examples (especially videos testing noise) and thoughts--that's all.

Looks like the 70D is coming next.

http://www.canonrumors.com/2013/06/canon-eos-70d-spec-list/

Anybody care to speculate as to card dope: type, speed, dual?

Both the "serious" and "jokesters" (you know, class 6 SD max, can't use UHS...) welcome.

Love Magic Lantern: brilliant.  My issue is...me.  I can't manually focus to save my life.  Sure, the focusing tools in ML are awesome, but my issue is turning the dang lens the wrong direction EVERY time. It's like a bad habit I can't break.  What I'd love is SOME super-easy-to-see assistance in that area (since the camera seems to know the right direction).  I have two ideas: one "way out there," the other, "not so much."

In a "way-out" world: direction and HOW much (wholly independent feature that uses maybe two arrow graphics—unless you can use one and flip it—of opposite directions, then repeats them based on out of focus travel.  It would have to compute focus travel, which no doubt varies lens to lens, and graphic usage).  The arrows would either fade or disappear as the lens is rotated (to show progress).



In a "not so much" world: direction ONLY (uses the Magic Zoom box and puts a red line on either side to indicate which direction to turn the TOP of the lens).  The red line would disappear once the lens is rotated.



In either case, I guess the center A/F point would be the reference.  As to whether the focus assist would update in real time or would require a button press (which would kinda suck) is beyond my pay grade.

Keep up the great work!