Sigma MC-21 - update the firmware ONLY via an L-mount camera and Sigma EF-mount lens?
So just checking/verifying what I've read...
The only way to update the firmware in the Sigma EF-to-L MC-21 adapter, is via (in my case) my S5ii body with a Sigma EF-mount lens attached to the MC-21?
I ask because I only have Canon EF lenses right now.
Thanks...