DaveN said:I decided to do the math, just for fun. 85/1.8 USM (425 g) + 100/2 USM (460 g) + 135/2L (750 g) = 1635 g. Sigma 105/1.4 - Weight: 1645g/58.0oz. Those three Canon tele primes combined weigh a bit LESS than the new Sigma alone!!
Yep, this is a monster lens. I would go just with 135/2.0 L, nothing else needed.
The new Sigma 105 weighs the same as Canon 70-200/2.8 L IS II or Canon 100-400/4.0-5.6 L IS II. Insane! I think "A" in the Sigma line actually means "Arduous" or "Ample".