Blending two distinct filter effects into one, the 6.6 x 6.6" Warm Ultra Circular Polarizer Filter from Tiffen helps to reduce reflections and glare as well as provide an overall warming tone. The Ultra circular polarizer effect provides deep, saturated, and rich colors and efficiently cuts haze and reflections from non-metallic surfaces. Complementing these effects, the incorporation of a Warming 812 filter into the design adds a natural glow to skin tones and other subjects, making it ideally suited for use in outdoor open shade conditions where there is an excessive blue color cast.

This filter is constructed from Water White glass for increased clarity as well as color fidelity. It is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 6.6 x 6.6" / 167.6 x 167.6mm and is compatible with select filter holders or matte boxes.

Helps to Eliminate Reflections and Glare    Reduces Haze and Blue Cast in Landscapes    Greater Color and Tonal Saturation    Integrated Warming 812 Filter Effect    Water White Glass Construction    ColorCore Technology

Ultra circular polarizer significantly reduces reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.

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

A circular polarizer differs from a linear polarizer in that it supports full use of a camera's autofocus and auto exposure functions.

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

Warming 812 filter effect provides an overall warm tone to the image and is ideal for working in conditions with an overwhelming blue color cast.

Related Questions and Answers

Q: 1. What camera type does this lens go with?

A: This lens is recommended for a full frame Nikon body, however you can use it on a cropped sensor camera and will produce an image similar to approximately a 12mm.

Q: 2. Does it come from the factory with mount compatible with Panasonic Lumix GH5?

A: This lens has a Micro 4/3 mount so it will fit directly on cameras such as the Panasonic GH5.

Q: 3. Has anyone used this lens with a SpeedBooster adapter on a Sony APS-C body? I'm wondering if you get the full circular fisheye effect. Since I'm going to move to Sony full-frame eventually, I'd rather buy this than the 4.5mm crop sensor lens.

A: I doubt anyone has done this specific combo before. Though you will get no ill effects from doing so. You will still get a circular fisheye effect from this lens.

Q: 4. Will this Sigma 8mm lens with an FTZ adaptor work on a Nikon Z8 in manual focus mode?

A: The Sigma 8mm lens will work with a Nikon Z8 and the FTZ adapter.

Q: 5. Will the lens work with Nikon D5600 and also auto focus like a normal lens?

A: The Sigma 8mm f/3.5 EX DG Circular Fisheye Lens for Nikon F is compatible with the Nikon D5600 but in manual focus mode only. This Nikon 8-15mm fisheye zoom would work in AF mode on the D5600: https://bhpho.to/3oCwKEU

Q: 6. Looking for a circular fisheye to gt round images with a cropped sensor Canon 7D. Will this lens accomplish that?

A: Dear Eugene S, Thank you for your interest in Sigma products. The Sigma 8mm DG lens will give you a circular image only on a 24x36mm or Full-Frame format. For a camera with an APS-C size, like your Canon 7D, you need to look at the Sigma 4.5mm F2.8 DC Circular fisheye. : a href= http://www.bhphotovideo.com/c/product/535757-USA/Sigma_486_101_4_5mm_f_2_8_EX_DC.html target= _blank http://www.bhphotovideo.com/c/product/535757-USA/Sigma_486_101_4_5mm_f_2_8_EX_DC.html/a

Q: 7. Compatibility doesn't include Olympus OM-D E-M1. Does it work with this older Oly body?

A: Meike 3.5mm f/2.8 Ultra Wide-Angle Circular Fisheye Lens for Micro Four Thirds works with Olympus OM-D E-M1.

Q: 8. Can this lens be used and focused manually if used on older Nikon film bodies?

A: Yes, this could be used with any Nikon F-Mount body.

Q: 9. What does the Guide Plate do?

A: It's a guide is used for cutting filter gels - like ND, color etc - that slot into the back of the lens. Most likely not something that you will use very often.

Q: 10. Does this lens fit on a Panasonic Lumix DMC-GF2?

A: Yes, Meike 3.5mm f/2.8 Ultra Wide-Angle Circular Fisheye Lens for Micro Four Thirds BH #MEMK35F28MFT will fit on a Panasonic Lumix DMC-GF2 Digital Micro Four Thirds Camera.