Has any one used this adapter on a C300 or FS7 or FS700?
It says you have to use the doubler, so I would really hate to lose any wide on my ENG lens.
http://www.bhphotovideo.com/c/produc…FQaTaQod1D0HQw
Here is a video review, but from what I understand, that doubler makes you lose your wide end, am I right?