Can someone give me the short version of these patents?
Is it identical form-wise (flange distance, physical mount ring, etc.) to EF but it just provides extra communications and options for interacting with the lens?
Or is it a nested lens mount concept with two different flange distances?
- A
essentially the patent discuss mounting lenses that have different protocols on a mount that can service both protocols.
Ie: EF lens protocols and RF lens protocols.
the communicate modes which the interchangeable lens can respond may differ. In order to be able to equip an imaging device with the interchangeable lens of several different types, the technology which distinguishes the type of interchangeable lens with which it was equipped is disclosed.
or this...
First, synchronous serial communication is performed with the first communication speed with which an interchangeable lens old type can also communicate. When the interchangeable lens with which it is equipped is distinguished from a new lens by the communication content, it changes to the synchronous serial communication in a more nearly high-speed second communication speed.
It's awkward but sums it up. They don't talk that clearly about the registration distance. THAT fact we gathered from other sources that stated EF lenses were mounting on the camera as if they were RF lenses. The patent simply describe a method of using one mount supporting two different types of lenses, which is exactly what we are surmising here.
Essentially RF lenses will be faster and probably tuned more for mirrorless. EF lenses will mount and work as if they are native to the mount as well.
It's unknown if canon would make DSLR's that could mount an RF mount lens, or whether there will be something similar to the EF-S lenses that prevents the mount from occuring.