This 39mm Urth Variable ND Lens Filter 39mm 1-8.6 Stopcan be adjusted to block 1 to 8.6-stops of light, giving you more flexibility in bright variable light. By blocking up to 8.6-stops, you can use wider apertures in bright variable light for shallower depth of field effects and slower shutter speeds for long exposure effects without overexposing your images.
Cinematographers can use this Variable ND Lens Filter to create more cinematic effects in bright light. The filter comes with a protective travel tin case, a recycled cleaning cloth, and recycled plastic-free packaging.

Variable 0.3 to 2.6 Optical Density    Offers Better Creative Control    Create More Cinematic Effects

Related Questions and Answers

Q: 1. Does it work in continuous autofocus mode of sony cameras with the Sony FE 28 mm f/2 Lens?

A: If the filter is set to the darker end, that may interfere with the continuous autofocus.

Q: 2. Does this filter have hard stops at the ends?

A: Yes, the Urth 58mm ND2-32 (1-5 Stop) Variable ND Lens Filter would have hard stops at the ends.

Q: 3. What size lens cap would I need with this filter?

A: This Urth 72mm ND8-128 Variable ND Lens Filter Plus+ (1 to 5 Stop) has a 72mm front thread, therefore it can accept a lens cap such as the Sensei 72mm Center Pinch Snap-On Lens Cap, BH # SELC72. https://bhpho.to/3lKGGu9

Q: 4. I just bought this filter and I experience something weird. When I turn it over the darker ND dot, the filter seems to go even darker and the photo look like a IR shot (all purple). Yesterday I set the filter at his darker point. I took a photo : f.14, 2.5s, iso 100. Then I turn further the filter and it became darker. So I change the time and I hand to go further as 60sec to get proper expose photo.. but in the viewfinder, it was all purple. Is that normal? I use it on Olympus em10II and 14-42 kit lens

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (58mm) is only rated to perform properly till 8.6 stops. Going beyond the specified maximum may degrade image quality. Additionally with higher levels of light reduction one runs the risk of IR pollution in the image. As you reduce visible light you are more suspect to this pollution, which could be why you are seeing the strange colors.

Q: 5. Are these filters glass or resin?

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (72mm) is a glass filter.

Q: 6. Will this work with the Sony A7SIII?

A: This filter will work with any lens with a 67mm thread.

Q: 7. Can I use this to photograph an annular (ring of fire) eclipse?

A: No, the K&F Concept Variable Fader ND2-ND400 Filter (67mm) is not for solar photography and one you can damage one's eyes and possible the camera. Best would be to use one like, https://bhpho.to/45StKoi.

Q: 8. Is this compatible with the 24mm Gmaster 1.4 lens?

A: The Aurora-Aperture 67mm Power XND Mark II Variable ND 1.5 to 3.3 Filter (5 to 11-Stop) will attach and work with any 67mm filter thread lens including the Sony FE 24mm f/1.4 GM Lens.

Q: 9. Is there any polarization effect with this filter?

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (82mm) reduces exposure, but there is no polarization effect.

Q: 10. does it have a 67mm filter thread to stack another filter on top of it?

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (67mm) will be able hold another filter on top of it, the size of the filter to mount is 72MM.