Canon’s aging beast, the Clinton-era EF 100–400mm f/4.5–5.6L IS USM lens is no more – after 16 years of production, it’s being replaced by the EF 100–400mm f/4.5–5.6L IS USM II, a more conventional design.
Here are some “dust trombones*” right here, back about a decade ago, all extended to the 400mm telephoto setting, the better to see the Blue Angels over Fort Mason, my dear:
Click to expand
The thing about the old lens is that it offered IMAGE STABILIZATION (IS) plus an “ULTRASONIC” MOTOR (USM) (for fast auto-focus) in the same package. At the time, Nikon couldn’t keep up, so it would make you choose betwixt one feature or the other, if you were lucky. Nikon lost a lot of customers during the Aughts for just this reason.
I’m sure the updated lens will be better (and of course, lots pricier) in most respects.
Adieu, push-pull lens.
*Pull it in fast enough and you can feel the breeze on your face, since all that air inside needs to go somewhere…