The Tiffen 105mm Linear Polarizer Filterhelps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A linear polarizer only differs from a circular polarizer in that it does not contain a quarter wave plane that enables use of auto focus and exposure features. Linear polarizers are best suited for use with manual cameras, such as view cameras, that are not dependent on internal mechanisms to determine focus or metering settings.

Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 10,000th of an inch, and then mounting to precision metal rings.

Helps to Eliminate Reflections and Glare    Reduces Haze and Blue Cast in Landscapes    Greater Color and Tonal Saturation    ColorCore Technology

Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.

Polarizing filters arrange, and filter, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light.

Clears up haze in distant landscapes and provides more saturated, vivid colors.

Strongest effect when used at a 90° angle from the sun.

Constructed using Tiffen's ColorCore technology.

Related Questions and Answers

Q: 1. What is the difference between Ultra Pol Circular vs Ultra pol LINEAR? Which one will work best in my matte Shape-2 4x4 case and with my Sony A7SII?

A: If you are also using a variable ND on your camera and want to use a polariser as well, you definitely need a circular one as a linear polariser will cause a colour shift as you rotate it.

Q: 2. Will a linear polarizer affect the AF system of my Sony a7iii?

A: We recommend a Circular Polarizing filter for autofocus cameras

Q: 3. So I was just curious does this come with any sort of case?

A: This filter comes in a hard plastic case.

Q: 4. how is this designed to work? Does it need a 138mm circular polarizer in combination with this filter?

A: You would need a holder that will take this size filter. The exact holder depends in part on the lens you are using.

Q: 5. Will this fit in the NiSi V5 pro holders?

A: From the NiSi V5-PRO manual: The filter holder can be used only with square filters with a width of 100 mm and a thickness of 2 mm.

Q: 6. Will this work with the Wooden Camera Zip Box Pro 4.5in Round Filter Stage?

A: Yes.

Q: 7. Since you are out of stock on the Tiffen 49mm Cir. Pol., can I use a linear polarizer instead on a mirrorless camera? My recollection is that Cir. Polarizer was developed to compensate for the effect of the mirror on light measurement in the camera, and if so, then shouldn’t be necessary for mirrorless camera.

A: Yes, a linear polarizer will have no effect on metering or autofocus (PDAF or CAF) in a mirrorless camera, which historically would cause metering and autofocus issues in cameras with mirrors or single-translucent lenses (SLTs).

Q: 8. Will I need to buy any kind of rotating adapter to drop this in? I have a matte box (on order) that states: 2 universal 360 degree rotating filter stages + 2 filter trays that support both 4x4 and 4x5.65 filter sizes

A: Which matte box did you purchase? Does it accept 138mm filters?

Q: 9. Was this made for film or digital? Do you have to angle it slightly for digital?

A: The Tiffen 4 x 5.65" Ultra Pol Linear Polarizer Filter, being a linear polarizer, is not good for digital photography. For digital photography, you would want to use a circular polarizing filter. Here is a link to the circular polarizing filter options in the 4 x 5.65" size: https://bhpho.to/4dOpbz9.

Q: 10. What is the size of this filter?

A: Series 9 filters by Tiffen are a unique filter system once popular with older lens and camera design. Requiring a Series 9 adapter ring, this system allows you to use one standard size filter (Series 9) on many lens sizes. Series 9 filters, although screw-on style, require a bit more work to set up. The glass filter drops into the adapter ring and is held securely in place with the included retaining ring (adapter ring sold separately). Series 9 filters have no threads. Although these filters are no longer as popular as they used to be, they allow the use of filters for harder to fit lenses, a common problem with older camera lenses.