Tiffen: .Clear: Optical glass lens protection with no colour shift. .Circular Polarizer: It will reduce unwanted highlights (reflections) and saturated colours. It also produces a deeper sky- blue, improves contrast and enters the reflection. .ND.3 Solid: Control of exposure or depth of field, without affecting contrast o r colour. It underexposes 1 point of light in the image. .ND.6 Solid: Idem. It underexposes 2 points of light in the image. .ND.9 Solid: Idem. It underexposes 3 points of light in the image. .ND.3 Soft Degradé: It will balance light, avoiding overexposed parts of the scene. It underexposes 1 point of light, only in half (50%) the filter surface. .ND.6 Soft Degradé: Idem. It underexposes 2 points of light, only in half (50%) the filter surface. .ND.9 Soft Degradé: Idem. It underexposes 3 points of light, only in half (50%) the filter surface. .Black Promist ½ - 1: It will remove the harsh edge off sharpness by increasing brightness and reducing contrast softly. This filter is generally used to produce” dreamlike” effects.  The greater the number of version of the filter, the more its features will be emphasized. .White Promist ½ - 1: Dreamlike soft-focus effects can be created with the Tiffen Pro-Mist filters. The Pro-Mist will alter your image in three ways. It will remove the harsh edge off sharpness without appearing out-of-focus. The Pro-Mist will spread light beyond the usual boundaries by introducing a small amount of flare from light sources and reflective surfaces. It also produces a mild reduction in contrast by lightening shadows. .Infrared Filter | T1: The Tiffen 4 x 5.65" T1 Infrared Filter is a high-tech filter targeted towards eliminating infrared contamination at 680nm. This filter will assist you in maintaining your color spectrum when shooting against a dark fabric. You will notice the blacks turn out true with no color cast from the red end of the spectrum. Helps eliminate the red contamination on dark products and fabrics   Schneider: .IR True-Cut 750: This Schneider Optics True-Cut 750 IR Filter fits a panavision (4x5.65) sized filter holder. The 750 IR Filter serves your digital needs by effectively filtering out the infrared spectrum, but also allowing wider lens angles without producing unwanted tints or effects. The IR filter is recommended for the Red One as it is extremely susceptible to infrared light. Designed for video cameras that have significant amounts of IR light contamination which causes colors to have a red-color tint, the Schneider Optics True-Cut IR Filter eliminates all invisible light from 750nm and above. The result is true rich true blacks and true colors that will truly deliver what high definition is all about.