Canon 400mm f5.6L metabones IV on a7rII

[morphf]

Has someone experience with the Canon 400mm f5.6L with a metabones IV on a7rII?

 

How does it perform on the last firmware?

How is de IQ

How does it handle?

 

(And wil it be protable enough for my girlfriend as wel?)

 

So whats are your exerience?

[morphf]

p.s.

 

if this needs to be in adapters, please move.