It was a joke Michael, it ain't gonna happen anytime soon. i replied in response to someone posted that 24-135 f2.0 lens would never leave the body for an event shooter. I suggested that 135mm is too short at the longer end. not enough of reach. hence me posting that 200mm would suffice but not physically viable for the reason you have just mentioned. ther lens would be huge, likely the size of 200-400 / F4.You do realize any 200mm f/2 lens must have a front element at least 100mm in diameter? That the smallest 200mm f/2 lens Canon has ever released is the 5.5 pound EF 200mm f/2 L IS?