I'm trying to achieve maximum depth of field without sacrificing light. I have a micro-4/3rds camera and i want to attach a full frame lens to it for the large and constant aperture. My question is, will the depth of field be increased in this case, compared to the lens on a full frame camera with the same aperture?
Assuming the same print size and effectively the same resolution, yes. But this isn't magic — it's the exact same increase you'd get by shooting with the same lens on full-frame and cropping by the corresponding amount.