Hoya 40.5mm UltraViolet (UV) Pro1 Digital Multi-Coated (DMC) Glass Filter<br /><br />&nbsp;Digital Multi-Coated Ultra Thin Frame<br />Reduces Internal Reflections on Sensors<br />Minimizes Bluish Cast Protects Front Element<br />Black Aluminum Filter Ring<br />Knurled Edge for Easy Attachment<br /><br /><br />Technical Details<br />Item Dimensions &nbsp;0.39 x 0.39 x 0.39 inches<br />Item Weight &nbsp;0.01 pounds<br />Model Year &nbsp;2012<br />Photo Filter Thread Size &nbsp;40.5 mm<br />Shipping Weight &nbsp;0.09 pounds<br />UNSPSC Code &nbsp;45121628<br /><br />Product Description<br /><br />The Hoya Ultraviolet (UV) Pro 1 Digital Filter is a wise initial investment. It helps protect your valuable investment from dust/ moisture and scratches/ which lead to costly repairs. Digital camera CCD or CMOS sensors are susceptible to reflections. Stray light can ruin photographs with flare and ghosting. Hoya Digital Multi-Coating reduces internal reflections/ which means a clearer image + greater contrast. A UV filter minimizes the bluish cast sometimes found under daylight conditions/ it is also the best protection against accidental damage to the front element of your lens. Some people refer to it as "cheap insurance". UV filters render your photos clearer/ sharper and more contrasty. a UV filter can produce a more distinct and acceptable image by removing much of the blue tint normally associated with atmospheric haze. Hoya puts/ at least/ one layer of anti-reflective coating on each side of their glass. It is not bare glass. this kind of production tends to minimize flare and ghosting. Digital Multi-Coating takes this protection to a higher level. Pro 1 Digital filters are ultra thin/ but have a front thread Digital Multi-Coated Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by internal reflections that can be a problem with CCD and CMOS sensors Black Almite Frame Filters feature a black matte aluminum/ satin-finish almite frame/ which reduces reflections Black Rimmed Glass These filters are equipped with black rimmed glass to reduce the chance of light reflecting off the edge Low Profile Frame Ultra-thin filter frames/ which help to avoid vignetting on super wide angle lenses/ are also designed to hold a lens cap Knurling Edge Frame These filters are equipped with a straight knurling edge for non-slip/ easy attachment and removal UV Protected Case Filter cases are UV protected/ which further lengthens the life of filters If desired/ it can be left on the lens at all times/ for protection<br /><br /><br />&nbsp;Product Information<br />Item Weight &nbsp;0.2 ounces<br />Shipping Weight &nbsp;1.4 ounces<br />ASIN &nbsp;B007N6RPZM <br />