Canon 2x converter stuck at f11 on Epic Canon mount.

[Van Royko]

Has anybody had this problem when trying to use a 2x converter- the f-stop is stuck at f11. I've seen this problem on multiple different mounts/lenses/converters.

Thx

 

[Van Royko]

bump

hey Red- the doubler worked on the old Birger canon mount. There is no reason it shouldn't work on the fancy Epic canon mount. Please address.

 

[Claus Mueller]

My 2xExtender III works perfect on 70-200 2.8 II and 200 2.8.

 

[Andrew Walker]

My 2x TC III works perfectly with my Canon 70-200mm f2.8 mk2. Do you have the newest firmware updated on your Epic/Scarlet? I know Tom Lowe was having some problems running a old firmware.

 

[Van Royko]

Many thanks. You guys rock. Hadnt updated the firmware yet as it wasnt release until a couple days ago. This gave me a very good reason.

 

[Andrew Walker]

Many thanks. You guys rock. Hadnt updated the firmware yet as it wasnt release until a couple days ago. This gave me a very good reason.

Its the same firmware as the beta. So its been out for a while now. I was also under the impression the 2x TC wouldn't work on the Ti Canon mount right now. But that was because I was listening to people that hadn't undated the firmware on their Epic.