Quote Originally Posted by DavidEccleston View Post
It would be cheaper to get a crop body + a less-super tele, assuming you can live with the extra noise, than to try do BIF on a full-frame. Save some weight, save some money, and find new perspectives with the glass you already own.
Besides the 1D X, Joel does have a 1D IV with a 1.3X crop factor. Half way to the 1.6X crop body.