Once I get the card and up and running I'll probably do my own tests, but in the mean time- maybe someone can resolve a mystery for me...
How does the crop relate to perspective distortion and depth compression? Actually I'm a bit confused how crop-factor relates to that as a whole, but maybe with the double-crop this is a good place to get overall clarity...
In other words, will a 20mm lens on 7D with crop mode (to keep it simple, let's assume it's 3x) feel like:
1) a 20mm would on full frame, just not the entire field of view (i.e. taking a crop of a picture *after* it's taken)
2) a 60mm would on full frame (3x crop applied *before* the picture is "taken")
3) a 92mm would on full frame (3x crop + 1.6 crop factor, applied *before* the picture is "taken")
Again, I'm talking here about perspective distortion and depth compression, not field of view.