do you have issues with your White balance electronic camera ... does your pictures have ugly colors. THIS LENS CAP HAS BUILT IN WHITE BALANCE CHECKING AND AT THE SAME TIME PROTECT YOUR LENS. check this video to see how it Works /watch?v=2zjYOfNi01k.
ONLY WORK WITH ALL 77 MM LENS BARREL.
REALLY CHEAP PRICE SO NO OFFERS.
JUST CALLS: nine 5 6 9 0 7 8 one 6 4.