Hoya NXT Plus 40.5mm 10-Layer HMC Multi-Coated UV Lens Filter #A-NXTPL405UV

UV filters are most commonly used to protect the front of your lens. A first line of defense against scratches, rain, dirt and dust. Hoya's 40.5mm NXT Plus UV Filter is a powerful upgrade to the best-selling NXT series. The new filter applies a waterproof top coat to Schott B270 glass polished smooth for easy cleaning. Dirt, smudges and water wipe away easily. Using 10 layers of Hoya's patented anti-reflection (AR) multi-coatings your images show improved contrast, color, and sharpness with a 98% light transmission. So, leaving it on all the time will not hurt your images.The NXT Plus filter frames are precision milled from lightweight aluminum for a slim profile that makes it perfect for all lenses including super wide-angles. The frame sports full front filter threads that can accept a normal lens cap or allows you to stack additional filters like a circular polarizer or neutral density.Most photographers leave a UV filter attached to the lens all the time as a form of protection. But the filter also plays an important role in filtering through UV Haze. Not ahuge problem when you are taking pictures at sea-level but as you hike into higher altitudes the filter definitely helps cut through the haze to increase contrast and improve color. TheNXT plus has a UV Cut Point of 360nm or L36 which is superior to most filters at this price point.FEATURES:Water Proof Top-CoatSchott B270 Glass10-Layer HMC Multi-coating98% Light TransmissionLow-profile Aluminum Frame