I'll add that I like the zoom lock on the 100-400 as well. Clamp it at any length and it stays there, for example clamped at 400 as you are sliding down the slope at the side of the road to get a little closer to the critter.
Jeff Nolten wrote:
I'll add that I like the zoom lock on the 100-400 as well. Clamp it at any length and it stays there, for example clamped at 400 as you are sliding down the slope at the side of the road to get a little closer to the critter.
Same goes for the 28-300L IS. It's a very useful feature.
Jeff Nolten wrote:
I'll add that I like the zoom lock on the 100-400 as well. Clamp it at any length and it stays there, for example clamped at 400 as you are sliding down the slope at the side of the road to get a little closer to the critter.
PetKal wrote:
You are probably right, but that zooming precision is of no practical consequence.......I can not imagine a situation where I'd need to fine tune FL to within 5% or some such. However, the manual focus requirements are much more exacting, and I suppose a telescoping kind of MF mechanism wouldn't work as well as the standard rotary type.
It's very important if you are tracking moving targets, especially things coming to / going away from you...
I loved the old 70-210 twist and zoom, you could manually focus and zoom in one fast motion, at the time, it was great for fast action that needed zooming to follow it. Still is.
The variable aperture 70-210 USM was NOT push-pull, only the f4 version was, and it sucked anyway...
