This 1- to 8.6-stop, 49mm Blue Multi-Coated Variable ND Filter from K&F Concept is a variable neutral density 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 easily, creating a dynamic look for streams, waterfalls, landscapes, and more. This multi-coated variable neutral density filter does not affect the coloration of the image. The filter's slim design reduces possible vignetting on wide-angle lenses.

Variable 0.3 to 2.6 Optical Density    Multi-Coated    Slim Design    Darkens Entire Image    Greater Control over Exposure Settings    Allows Wider Aperture

Related Questions and Answers

Q: 1. Is this the K&F filter with click stops @ each setting??

A: No, these filters don't have click stops.

Q: 2. What size lens cap fits this?

A: A 69 or 70mm push on cap should fit.

Q: 3. Would this fit or which will fit a Sony A7 IV 28-70mm Lens?

A: You would need the 55mm version of the K&F Concept Variable Fader ND2-ND400 Filter (72mm).

Q: 4. What size lens cap fits this?

A: Unfortunately, the K&F Concept Variable Fader ND2-ND400 Filter (72mm) does not have front filter threads and is not designed for use with threaded lens caps.

Q: 5. Does it have positive stops, detents, at each of the stops?

A: The K&F Concept Variable Fader ND2-ND400 Filter (62mm) doesn't have detents; it has markings for the stops on the edge of the filter.

Q: 6. Is this filter suitable for solar eclipses?

A: No, the K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter would not be suitable for solar eclipses. Using this filter for solar eclipses could result in damage to your camera, and if you are using a DSLR camera, could cause major damage to your eyes. If you are looking for a suitable option for eclipses, I would recommend this: https://bhpho.to/3VcNfph

Q: 7. 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: 8. Do they have any noticeable color shifts?

A: We have not had reports of any noticeable color shifts when using the K&F Concept Variable Fader ND2-ND400 Filter.

Q: 9. Would this fit a 12mm samyang lens?

A: The K&F Concept Variable Fader ND2-ND400 Filter (67mm) BH #KFVFND240067 fits lenses with a front thread of 67mm. I am not seeing we currently sell a 12mm Samyang with that thread size. You will want to double check your lens to see what the front thread size is. You did not list the full name for us to check.

Q: 10. What is the frequency response of the K&F Concept Variable Fader ND2-ND400 Filter (40.5mm)?

A: Unfortunately, the specs of the K&F Concept Variable Fader ND2-ND400 Filter (40.5mm) do not list frequency response. The specs we do have is that if you turn the filter you can change the density of the filter from 1 to 8.6 stops.