Time to clean the lenses

ROR from V-Vax corporation. 1507 Elston, Chicago, IL. 60622

Phone at 773-276-1747.

This product tested by NASA and will increase light transmission on photo lenses by as much as one half F-stop. I use it on my Pioneer rear projection and got improvement by cleaning the front surface mirror and lenses at the same time.

Even though they are glass, they may have coatings on them that could be damaged by improper cleaning. The safest thing to do is contact Pioneer and see what they recommend.