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"