Two new Canon RF lenses appear for certification

[SilverBox]

Yes, a cheap and small pancake makes a lot of sense. adapting the EF40/2.8 doubles the size and cost of the pancake alone.

True enough, although I use the RF adapted 40mm STM quite a lot, so I like to think of it as saving me the cost of buying either the RF50mm or RF35mm f/1.8 lenses