This 1- to 8.6-stop, Variable Fader ND2-ND400 Filter from K&F Concept is a 37mm filter providing an adjustable light reduction of 1 to 8.6 stops. It darkens the entire image evenly, allowing a photograph to be made with a wider aperture or slower shutter speed without overexposing your image. By slowing the exposure time or increasing the aperture, it is possible to control the depth of field and blur movement, creating a dynamic look for streams, waterfalls, landscapes, and more.

The rotating filter ring is made from aircraft-grade aluminum and features a density scale and 40.5mm front filter threads.

Variable 0.3 to 2.6 Optical Density    Optical Glass Construction    Rotating Aluminum Filter Ring    40.5mm Front Filter Thread    Darkens Entire Image    Greater Control over Exposure Settings    Allows Wider Aperture    Includes Plastic Filter Case

Related Questions and Answers

Q: 1. Can I use this with a 37-58 mm step up ring to attach it to my camcorder which has a 58 mm lens?

A: The Opteka 37mm 0.3X HD Ultra Fisheye Lens Adapter has a rear thread that is 37mm. If one wanted to mount this lens to the front of a 58mm threaded lens, one would need a step down ring from 58mm to 37mm. Example, Sensei 58-37mm Step-Down Ring BH #SESDR5837 https://bhpho.to/3Du9Dhk.

Q: 2. Will it fit a cannon gl2

A: This will not fit a Canon Gl2 camcorder which offers a 58mm front filter diameter.

Q: 3. Can I use it on the Ivation Pro Steady DSLR Rig System with Shoulder Mount? Or does it work only on rigs with 15mm Rod Systems?

A: This follow focus lists for use with 15mm rods. It is possible to add a 15mm rod baseplate between the Ivation Pro Steady DSLR Rig System and camera. Product example is CAMVATE Baseplate with 7.9" 15mm Rods for Select Canon/Sony Cameras (Red Wingnut) BH #CAC1519 • MFR #C1519. https://bhpho.to/2EUl4mO

Q: 4. Is this system able to use 15mm studio setups?

A: Yes it can fit 15mm setups

Q: 5. Will it be work with a Canon VIXIA HF R200?

A: Unfortunately no. The Canon HFR200 has 34mm front threading and the Opteka 37mm 0.3X HD Ultra Fisheye Lens Adapter lens has 37mm threading for attachment.

Q: 6. Could this work with a Panasonic Palmsight DV910?

A: The Panaxonic camcorder accepts a 43mm filter. This OPTEKA lens is too small.

Q: 7. will it fit a canon elura 60?

A: We don't know. The camcorder is discontinued and we don't know enough information on it. If it takes 37mm filters, then it should work.

Q: 8. Will this fit for a Nikon D5100 my lens say it’s 18-55mm

A: No. This is strictly for video cameras

Q: 9. Will this fit on a Panasonic ag-dvx100b

A: I don't know about that, but on another subject, make su to try in on your camera and see it works, as with mine, the focus never worked. No matter what I did, it always showed blurry.

Q: 10. Is it compatible with a Sony vx 2100?

A: no you would have to get the one with ther 58mm thread size