I was sort of considering one simply for the small size - gripped body/1D X with this lens would fit in my Lowepro Utility Bag 100 AW, not menaingfully thicker than the camera body, and the whole thing would fit in my computer satchel. That means I could take a dSLR on an overnight trip whereas I wouldn't be able to take one with a standard lens. The cheap doesn't bother me, as long as the IQ is good - and it seems to be, both the MTF chart and more importantly the images so far.