MTF B4 adaptor

[Starman]

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/product/854167-REG/MTF_Services_Ltd_mtb4sem_B4_2_3_to_Sony.html/?gclid=CJPgzKaL0MgCFQaTaQod1D0HQw

Here is a video review, but from what I understand, that doubler makes you lose your wide end, am I right?

https://youtu.be/f2xcFwXIzOg

 

[Necktie Boy]

I believe Alister Chapman helped design it. Check his site for a review.

Don't remember what thread B4 adapters were talked about. Whatever the double does on an ENG camera, expect the same. It will cost you 2 stops. You will need a special cable to power the servo.