Swit's S-7210U allows you to power the Sony PMW-F3 using a Swit S-8U62 battery. It converts S-8U62 5.5mm pole DC lead to 4-pin XLR to fit PMW-F3 DC-IN port. Compact and lightweight the S-7210U can easily be carried along with the camera.
S-7210U Specifications -
Output voltage: DC 14.4V
Applicable camera: Sony PMW-F3
Applicable battery: Swit S-8U62
Dimensions: L=49.3mm, D=19mm