Fotodiox WonderPana 66 FreeArc ND16 & GND 0.9 HE Filter Kit for Sigma 14-24mm

Comprising the dedicated filter holder and a bracket for attaching 6.6"-wide rectangular filters, this WonderPana FreeArc Core Filter Holder and 6.6" Bracket from Fotodiox enables attaching 145mm threaded filters and caps to the lens, which itself lacks filter threads, and the included bracket can be added for working with 6.6"-wide square and rectangular filters. Once assembled, the entire system rotates a full 360 Degree for flexible placement of the filter in use.The Fotodiox WonderPana 6.6" Holder Bracket is a two-piece assembly designed to be used in combination with a Fotodiox WonderPana FreeArc Core Unit. When attached it then allows for the convenient use of two 2.5 to 4.0mm-thick filters measuring 6.6in wide, or one 6.6in wide filter along with one 145mm round filter behind it. The WonderPana 6.6" Holder Bracket features a lightweight, aluminum-alloy construction that has a corrosion-resistant, black anodized finish for durability. A rigid pouch is included for storage and transport.- 145mm Neutral Density 16 Filter -Fotodiox Pro 145mm ND16 Filter is a true neutral density filter designed to darken the image by 4 stops. The filter features an even, neutral gray color for creative photography applications. ND16 filter offers a 4-stop EV value which allows you to slow down the shutter speed or use a larger aperture in bright light conditions. Neutral Density filters have their unique applications and offer the possibility of achieving otherwise impossible results. ND filters reduces the amount of light reaching the film/CCD. The filter is double threaded and thinner than a standard filter to minimize any possibility of vignetting when used with a WonderPana 145 filter system. The optic is coated to correct for color balance as well as minimize reflection at the filters surface; therefore, reducing flare and ghosting. Fotodiox ND filters are neutral gray and do not color cast the images.- 6.6x8.5" Graduated Neutral Density 0.9 Hard Edge Filter -Fotodiox Pro 6.6x8.5" filters are the strongest in the industry at 2mm thick. Fotodiox 6.6x8.5" filters are practically unbreakable and are guaranteed spectrally neutral to within + or - 3 in the a and b channels of the lab color space. Fotodiox Pro filters are also guaranteed to be within + or - 2 in regards to total light transmission. Fotodiox currently offers 6.6x8.5" in 4 Graduated Neutral Density (ND) filters: .6 Soft Edge, .6 Hard Edge, .9 Soft Edge and .9 Hard Edge. This filter is made by Fotodiox Pro specifically for the WonderPana 66 Systems.- WonderPana 6.6" Bracket -The WonderPana66 Upgrade Brackets are premium grade aluminum holders that attach securely to either side of the WonderPana 145 or FreeArc Core Units (sold separately). The addition of these brackets allows 6.6 inch (168mm) wide square or rectangular filters to be used with your favorite UWA/SWA lenses. These brackets allow the photographer to stack either two square/rectangular filters or one square/rectangular filter and one round 145mm filter.- WonderPana 145 Lens Cap -This Lens Cap will fit both WonderPana 145 and WonderPana FreeArc systems, it is made from premium grade, high impact plastic and will protect the front lens element when not in use.WonderPana OverviewChallenging shooting scenarios often call for adding a lens filter to save the shot. However when you're shooting with an Wide Angle or Ultra Wide Angle lens, the bulbous front lens element and lack of threads make it impossible to add filters - until WonderPana. The WonderPana is a complete filter system designed expressly for filtering UWA and WA lenses without vignetting.