I connect my Canon EOS R5 via USB-3 and the ASIAir can obviously set many parameters via the USB port. Can the ASIAir also adjust the focus of the lens (assuming it is electronically focused) via the USB port?
Pedzsan No.
ASIAIR Plus allows control of all ASI USB 3.0, ASI Mini cameras, selected DSLR and system cameras, and mounts via smartphone or tablet. You can read this discuss to know more: https://bbs.zwoastro.com/d/1930-attach-canon-lens-ef-with-c-mount-lens-to-canon-eos basketball legends