Yea, we need to find out whats up with this tearing. Is it only happening in crop mode?
How many frames did it affect? Was it possible to patch by doubling the alternating good frames?
Crop mode: I was only shooting in crop mode that day. I will try to do some testing.
How many frames: Hard to do an exact count, but substantial, I suspect it is 50%, though not always visible (see symptoms listed below).
Patching: If you fixed it by substitution it would get very jerky, since there were so many.
One thing I notice is that the part of the frame that is torn is leading; in other words it is identical to that portion of the frame in the follwing frame. The tearing is only visible when there is motion, i.e. panning (as in the first sample above) or motion by the subject (girl's head in second sample above). This is why only the girl's head is affected and not the background; really the background is too, but you can't see it because the background is not moving.
So to sum up actual symptoms:
1: Frames alternate between good and bad.
2: Each bad frame contains part of the following (good) frame. These portions seem to consist of a horizontal strip (or strips; in one frame I saw two of them) running across the width of the frame. The strip can vary in height and location.
