03-03-2020, 10:56 AM
(This post was last modified: 03-03-2020, 11:00 AM by Brightcolours.)
(03-03-2020, 10:07 AM)Klaus Wrote: Big and good
https://www.opticallimits.com/canon_eos_...f2470f28is
"The Nano USM AF system utilizes both a ring-type USM (ultrasonic) and an STM (stepping motor) mechanism."
It does not have a ring-type USM, not a STM. It has a nano-USM which is neither and just one motor...
https://www.usa.canon.com/internet/porta...Technology
The lens renders impressively smoothly. But, indeed it is expensive.