This 2-stop, 6.6 x 8.5" FotodioX 2-Stop Hard-Edge ND Filter 6.6x8.5"from FotodioX 2-Stop Hard-Edge ND Filter 6.6x8.5"is designed for use with the WonderPana 66 and FreeArc filter holder systems. The filter helps to darken specific areas of an image, such as bright skies, while allowing for a normal, unaffected exposure in the other regions of the image. The filter is densest at the edge and tapers to clear by the middle, with a hard-edged line of transition between the dense and clear areas. Neutral density filters do not affect the coloration of the image and this filter provides up to a 2-stop reduction in light from entering a lens. This filter is made of durable, CR39 optical resin and measures 4mm thick. A carrying pouch is also included with the filter.

0.6 Optical Density    Optical Resin CR39 Filter    4mm Thick    Reduce Exposure in Selective Areas    For WonderPana 66 & FreeArc Systems    Includes Carrying Pouch

• Darkens bright areas of an image, such as skies, while leaving the remainder of the frame unaffected
• Provides up to a 2-stop reduction of light in selective areas
• Hard-edged line of transition between the dense and clear areas
• Filter does not affect the overall coloration of the image
• Constructed from optical resin (CR39) for clarity and durability
• Filter pouch included for storage and transport

Related Questions and Answers

Q: 1. Will this fit on Sigma 30mm 1.4 Art for Canon?

A: Your Sigma 30mm 1.4 reads 30mm 1:1.4 DC 62 on the barrel. 62 stands for filter thread size. Since this filter is 62mm NDx8, it will fit your lens.

Q: 2. 145mm Neutral Density 32 Filter for WonderPana 145/66 Systems by FotodioX Can these filters be stacked ?

A: Yes, the filters have the same 145mm threading on each side and can be stacked.

Q: 3. fits in Mini Matte Box Small Rig 4x4 ?

A: Yes, the system will adapt to all 4x4 filters that are up to 4 mm thick.

Q: 4. Does this fit the Sony 24-70 Gmaster lens?

A: No, you would need the 82mm version. Which is the Hoya 82mm ND (NDX8) 0.9 Filter (3-Stop) (http://bhpho.to/2aYyUXX).

Q: 5. has anyone out there used this on the nikor 14-24mm and how did they find it worked?

A: The Nikon 14-24mm f/2.8 does not have filter threads, and this filter will not be compatible with that lens.

Q: 6. What is the measurement between the outside edge and the inside edge of the aluminum ring?

A: Please direct your question to Hoya at; Tel: (800) 421-1141 or (714) 849-5700 Website http://www.hoyafilter.com/ Email support@thkphoto.com

Q: 7. How is the image quality of this filter glass in comparison to LEE filter glass?

A: The image quality of the FotodioX 186mm Slim ND 3.0 Filter (10-Stop) is neutral, and will not get in the way of the sharpness or colorization of the lens it is mounted to. The Lee filters are not available in a circular 186mm.

Q: 8. does this work for the tokina 16-28mm pro system?

A: This filter will not work with a Tokina 16-28mm pro. We do have special filter holders for that lens. https://bhpho.to/2WkRXmt

Q: 9. How is the image quality of this ND filter glass?

A: The image quality of the FotodioX 186mm Slim ND 3.0 Filter (10-Stop) is neutral, with no additional colorization or distortion.

Q: 10. Annoying question, but how many grams does this filter weigh? It's for my Zenmuse X5 for Inspire 1.

A: 11g actually I used them with X5 camera with M. Zuiko 25 mm f/1.8