This 3-stop, 6.6 x 8.5" Hard-Edge Graduated ND Filter from FotodioX 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 3-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.

0.9 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 3-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. Can anyone confirmed which version this is? B&H photos show the stop indicators on the side as being lines, but reviews show the indicators being actual numbers.

A: that is an older photo, yes it has numbers.

Q: 2. Can this filter be used to good effect other than sunrise and sunset?

A: You could use it whenever you have a very bright light source of light in the frame. This would tame some of that brightness.

Q: 3. 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: 4. 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: 5. Will this fit over a 67 mm B&W ND filter on my lens or do I need to remove the ND filter first. Also, will a 67mm lens cap fit on this Syrp ND filter?

A: If your existing filter has 67mm front filter threads, you can attach a Syrp 67mm Variable Neutral Density Filter to it. It isn't recommended to use more than one ND filter at a time, however. You can attach a 67mm lens cap to this filter.

Q: 6. HiIs this a double or single threaded?Im trying to attach one more filter in front of it. Is that possible? Thanks

A: It is a single thread.

Q: 7. does this work on this system http://nikonrumors.com/2013/09/07/fotodiox-wonderpana-145-adapter-kit-for-the-nikon-14-24mm-f2-8-lens-review.aspx/and has anyone used it and liked the results??? susan

A: Yes, the FotodioX 145mm Pro Ultra Slim Neutral Density Filter is compatible with the Wonderpana 145 Adapter Kit for the Nikon 14-24mm f/2.8. Unfortunately, no one has reviewed this combination on our website.

Q: 8. What size Push-On lens cap do I need for this filter? The frame of the filter seems to be larger than 82mm

A: If you are planning on keeping the step ring on while you shooting yes you will have to buy an 82mm cap

Q: 9. Will the filter fit into the leather pouch with the 7282 step up ring attached to it? It is hard to tell from the photos.

A: Yes the filter fits in the leather pouch with the 7282 step up ring attached or detached to it. I think you can even fit both step up rings into the leather pouch along with the filter. You could use a small microfiber cloth to separate them from the filter.

Q: 10. Does this filter have a hard stop at both ends or does it continuously turn?

A: Continuously turn