snou

Yeah exactly that is the next step which had in mind, to go and try those body camera at a shop as much as i can.

Yeah i have do many many research on net btw, but i can't take that information i want. I don't own a camera right now, but my brother use Canon 5D Mark III and he use those lens EF and he use his camera for photography, i want a camera which is good cheap for video recording. So for that i was stuck in idea for GH4 or A7S, but those 2 cameras have many different options you know "half are good half are bad" for both products. I did a lot of research as i said above and i stuck at how a adaptor will work on GH4 while is a crop.

Anyway i think that you answer a lot of questions i had, i want to give all many thanks. I will post if i find something new and cool for the subject :D

"sorry for my english btw"

Because I think i'm confused on this issue, that with the use of an adaptor we lose only the function of auto-focus or will we lose the shutter speed and aperture too?I will not be able to change the arrangements with the roll button?

I know the needed of an auto-focus is not so much for me too but i like to have the opportunity to change s/speed and aperture with the use of roll on body camera.

Right i search this and i find it with another name Mitakon Lens Turbo EF - m4/3 i saw some test its very good for a low price mount. But we all wait for a new release of EF-m4/3 with electronic contact, we all want auto-focus etc will work automatically. If someone have any idea about this please drop it here thank you..

Yeah i bet too that will be soon release EF to mFT Speed Booster ;D

Quirky i want to really thank you for all the information you give. I have post the same question in similar forums but anybody help me in this subject.

So i'm searched about the Metabones Speed Booster but i didn't find mount like EF to MFT they only have FD to MFT.

But i found Kipon EOS to MFT mount that is cheap and with aperture control.

Thank you again...i will search more about this.