The hoya 77mm pro 1 digital protector filter is the ultimate in clear filters it will not affect the colour balance or performance of your lenses in the slightest however constant use will protect your valued lenses from expensive front element damage which could be caused by dirt knocks or scratches 77mm pro 1 digital protector filter main features hoya pro 1 digital filters digital camera ccd or cmos sensors are highly susceptible to reflections and this stray light can ruin your pho