Hi all, A colleague of mine bought a Sigma 8mm f/3.5 EX DG Circular Fisheye for use on her Eos 50D. It turns out that the lens is made for full-frame cameras. whoops. She needs to get the full 360 degree hemisphere on the sensor, but right now it's being cropped. Is there anything she could do to modify the setup to make this work? Extension tubes do the opposite of what she wants. I expect she'll either have to get a new lens or a new body, but wanted to check here first before doing so. Thanks for any thoughts!