GH3 GH3 + Sigma 30mm 1.4

[Polaroid22]

Hello,

I have a GH3, can I use a canon EF sigma 30mm 1.4 on it with a adapter, and still be able to change the F-Stop? As I have seen video's with people with the sigma 30mm 1.4 on their GH2, and was wondering how they would change their Fstop as the lens does not have a manual aperture ring?

Cheers

 

[Grisnjam]

Hello,

I have a GH3, can I use a canon EF sigma 30mm 1.4 on it with a adapter, and still be able to change the F-Stop? As I have seen video's with people with the sigma 30mm 1.4 on their GH2, and was wondering how they would change their Fstop as the lens does not have a manual aperture ring?

Cheers

There are some expensive active EF->m4/3 adaptors that let you set the F-stop electronically (but still from the adaptor, not the camera). Here is one in use with the BMPC and Sigma 18-35 F1.8:

http://cheesycam.com/pocket-cinema-camera-w-sigma-18-35mm-f1-8-redrock-micro-livelens-for-mft/

You can use a simple adaptor but you have to set the F-stop on a Canon body first before mounting it on the GH2/3.

I use this one with the fully manual Rokinon CINE lenses:

http://www.amazon.com/Fotodiox-Mount-Adapter-Thirds-Cameras/dp/B003EAXT5G

The EF Speedboster from Metabones is promising an active mount but no one has seen it yet.