HOYA PRO ND-EX Neutral Density Filter ND8 - 58mm - ** AUTHORIZED HOYA USA Neutral Density filters allow precise control of light reaching the sensor, both for photography and video. Reducing the amount of light make possible to reduce the shutter-speed and practise long-exposure, while in video this reduction of light will allow to use wide aperture such as F1.4 for bokeh even in bright light conditions to maiain the 1/50e sec shutter speed depending your needs. HOYA use an exclusive coloring process named ACCU-ND for uniform deposit of color resulting in accurate density value and perfect color neutrality. HOYA PRO ND-EX filters reduce equally trasmittance in visible and infrared spectrum. HOYA PRO ND-EX8 reduce the light by 3f.stops (T%= 12,5%), PRO ND-EX64 by 6f.stops (T%= 1,56%) and PRO ND-EX1000 by 10f.stops (T%= 0,10%) making it the most popular filter for long-exposure. HOYA ultra-clear optical glass is precisely inserted in aluminium ring with back and front thread to install lens cap. It's possible to stack filters and therefore reach different densities, for example combination of a PRO ND-EX8 and PRO ND-EX64 will reach 9 f.stops density equivalent to PRO ND-EX500 (T%=0,20%). It's highly recommended to proceed vignetting test before shooting. HOYA PRO ND-EX filters are available from diameter Ã49mm to Ã82mm. Event Cameras is a family-owned business located in the Beautiful Pacific Northwest of the U.S. We have been selling Photographic Filters since 2003. We try not to make things to complicated. We strive for same day shipping on all orders received prior to 2:00pm Pacific Time. Monday though Saturday. For International orders we use eBay’s Global Shipping program. The Global Ship program collects shipping costs as well as import fees at the time of purchase. Making for a seamless international shipment. Event Cameras has been a seller of Hoya, Kenko, and Cokin Filters since 2003. All product lines are acquired directly from the Authorized U.S. Importer for Hoya, Kenko, And Cokin products. Ensuring that you receive the Genuine product with a full manufacturer’s warranty. No Knock Offs or Imposters. Only the originals. We work closely with the Authorized U.S. operation to acquire products that are available domestically as well as internationally. Have a question? Send us an email and we will get back to you as soon as possible during normal hours of operation. (Monday through Saturday: 8:00am – 5:00pm Pacific Time.)