Time for a dumb question: doesn't an image height of 21.64mm imply that these are all less than FF (24x36)? These could be for ef-s (22.2x14., or even a future mirrorless system?
I think more likely I'm just not understanding how the given image height factors into sensor size. Anyone who can clarify, please do!
The "height" is from the middle of the image, since it doesn't matter which direction you go from there to form an image circle. The diagonal of a full frame sensor is sqrt(24^2+36^2) which is about 43.3mm, and half that is 21.6mm.
Canon 1D, 300D IR, 450D full spectrum, 600D, 5D2, 7D, 7D2, EF 35/2, 85/1.8, 135/2+SF, 70-300L, 100-400L
EF-S 10-18, 15-85, MP-E 65, Zeiss 50/2 macro, Sigma 50A, 150 macro, 120-300/2.8 OS, Samyang 8mm fisheye