Sony PMW-350 camera
Viewfinder is CBK VF-01
This viewfinder is also used on the PMW-500, 320, and I think the new 300 and 400.
The EX3 has a similar part but I'm not sure if its exactly the same (it does look very much like it)
It was damaged due to the lens dropping out of the viewfinder assembly on a cold wet day whilst filming out the back of a moving vehicle at Eton Rowing lake. The lens got scratched.
I don't know if any other owners have experienced this but there must have been a design fault on this viewfinder early on as its design has now been changed. It was very easy for the eye cup and lens to come off with just the slightest knock. I now place 2 pieces of insulating tape down each side to keep it in place
I contacted Sony through a dealer and was told I could only get the part if I bought a far bigger piece of the viewfinder that I didn't really need at a cost of over £400.00.
The plastic diopter adjustment lens Is all I want and I suspect it may be used in several Sony viewfinders / cameras (EX3 looks very similar) and there may be someone out there that has one lying around. I would appreciate any advice or recommendations.
(shot quickly on my Hero)...