Quote Originally Posted by neuroanatomist


I think the 85L would be too difficult to design - the IS elements would need to be similar in size to those in a supertele lens, and the 85L is already enough of a cannonball. But, the EF-S 17-55mm f/2.8 IS has IS, and it's FF-equivalent focal range is 27-88mm, pretty close to 24-70mm...



What makes the difference in the 17-55, in terms of the size, for IS design? I mean, they fit IS into it, and it's not a cannonball.


Besides, the 27-70 is also a cannonball. People already complain about its weight. That doesn't stop them from buying it, nor does it stop them from buying the truly BIG cannonballs: the long teles.


Or, should the long teles be called Cannons?