This 2-stop, 7.9 x 10.2" FotodioX Hard-Edge Graduated ND Filter is designed for use with the WonderPana 80 and FreeArc XL filter holder systems. It 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, making a useful filter for photographing landscapes with sky and and horizon. 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. A neutral density filter with a hard-edged line of transition is particularly useful for images that feature horizons, or any hard transition between the sky and land. 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    2mm Thick    Reduce Exposure in Selective Areas    For WonderPana 80 & FreeArc XL Systems    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
• Useful for images that feature horizons, or any hard transition between the sky and land
• 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. 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: 2. is this filter compatible with Pentax 58mm lens?

A: I have used this filter with Canon lens. No problem. Also have mounted the filter in front of a HOYA uv filter. No problem. While I have not used it with any PENTAX lens, I would expect that there will be no problem since the mounting thread for 58mm is standard.

Q: 3. 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: 4. Does the 5-stop (Ultra slim) filter allow stacking?

A: Yes, the Specifications state the FotodioX Pro 145mm Ultra Slim ND 1.5 Filter (5-Stop) has 145mm front filter threads which should allow you to connect an additional filter that has 145mm filter threads to the front of the filter.

Q: 5. HelloWould this Filter and the Hoya 52mm Alpha Circular Polarizer Filter work (Compatible) with Panasonic Lumix FZ200?Thank you.Shaun

A: The sizes of both filters are the proper size for the FZ200 and will properly fit it, however Panasonic's instruction for the manual discourages use of two filters on the camera, likely as it will become too darkened for the camera to autofocus with.

Q: 6. Does this work with the Sigma 14-24 mm lense that has the permanently attached hood?

A: Yeah this is made for that 14-24mm Sigma lens.

Q: 7. Does this work with the 82mm PM VND II by PolarPro?

A: No, the PolarPro Recon ND16 Filter is designed for Recon VND Matte Box and will not work with an 82mm filter.

Q: 8. 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: 9. Anyone know if this would vignette on a 16mm on full frame? I primarily shoot a Nikon 16-35 on a D850.

A: This will not vignette on 16-35mm if you do not stack it over UV filter

Q: 10. Hi, do you know if I could couple this filter on the Freewell quick swap system? I have the Freewell magnetic filter kit but they discontinued their revers grad filter.

A: Although both systems are magnetic, they have not been tested with one another to our knowledge. Your results may vary.