Contax RTW Power Pack lens mount_M42 You probably don't want to

You probably don't want to tuck this into your camera bag just in case- it weighs 4

5 Prakticar lens and a built in flash

The original Blackmagic Pocket Cinema Camera is a tiny camera designed to do one thing: shoot really high quality full HD video

This first series of Pentax K-mount lenses is more heavily built than the later Pentax-M lenses

Contax RTW Power Pack lens mount_M42 You probably don't want toPower your Contax Real Time Winder externally with this power pack. Toss in the AA battery insert from your Real Time Winder and hook your camera up with the included power cord. Why would you do this? Well, if it's cold out, you can stash this holder in a pocket and prolong your battery life. It's quicker to swap batter inserts, too (inserts are not included). In good condition, with some splitting in the finish of the external vinyl case.