UV Filter Absorbs the ultraviolet rays which often makes outdoor photographs hazy and indistinct. A multi-purpose filter for color as well as black and white films. Also serves as a permanent lens protector. Pro-Optic Pro Digital Multi Coated Filters are renowned for their ability to minimize reflection and reduces flare and ghosting. The result is an average light transmission of over 97%, giving sharp contrast and well balanced color. Pro-Optic Pro Digital Multi Coated filters are recommended for enhancing the performance of today's multicoated lenses. Circular Polarizer Reduces glare when shooting metallic surfaces,glass, snow and water surfaces. In outdoor shooting, the filter can deal effectively with light reflected on steam or airborne dust particles. You can monitor the changes at different angles through the viewfinder as you rotate this filter. Neutral Density ND2X Neutral Density filters evenly reduce the amount of light passing thru the lens without effecting color. Ideal for reducing bright light in large aperture situations when a narrow depth is field is needed. Allows for slower shutter speeds when blurring or showing of movement is desired. Allows balancing of exposure to highlight a key subject. Lets you use higher speed films in bright light. (2X) Reduces the light one f-stop.