May 13: It’s Canon vs Sony
- Industry News
- 29 Replies
I guess there's a nuance there. Older USM lenses (EF except some of the last ones) had a manually-coupled focus ring that moved elements that could also be moved with the motor. RF lenses lack the mechanical coupling for focusing, turning the ring does nothing unless the lens is connected to the camera and the camera is powered on.Canon did implement it so well that I no longer care whether it is mechanical or motorised. And, as you wrote, if focal changes are done the same way, please Canon, accept my order!
So I think there are three possibilities for the 20-50/4L PZ
- Manually-coupled zoom ring where the zoom mechanism can also be driven by a motor (like old EF USM focus motors)
- Zoom-by-wire with a freely-rotating zoom ring (like RF focus motors)
- Zoom-by-wire with a ring-shaped rocker switch (like the current RF-S 14-30 PZ lens)
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