This 1- to 8.6-stop, Variable Fader ND2-ND400 Filter from K&F Concept is a 77mm 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 82mm front filter threads.

Variable 0.3 to 2.6 Optical Density    Optical Glass Construction    Rotating Aluminum Filter Ring    82mm Front Filter Thread    Darkens Entire Image    Greater Control over Exposure Settings    Allows Wider Aperture    Includes Plastic Filter Case

Related Questions and Answers

Q: 1. Will this lens work with A7R with K-mount to E-mount adapter ?will it give full-frame coverage ?thanks

A: Yes, the Pentax SMCP-FA 77mm f/1.8 will be compatible with the Sony A7R with the use of a Pentax K mount to Sony E mount adapter, such as the Voigtlander Adapter for Pentax K Lens to Sony E Mount Camera, however, it will not retain any electronic lens functions: http://bhpho.to/1joV3O0

Q: 2. Will these fit Mefoto A1350?

A: Yes, the MeFOTO SMRTSA Replacement Leg Stops for RoadTrip S Aluminum Tripod (3 Sets of 4 Shims) would be compatible for use with the MeFOTO A1350 RoadTrip Aluminum Travel Tripod.

Q: 3. Does this support the Manfrotto Aluminum Twin Leg Video Tripod Mid-Level Spreader? (MUTTWINMC)

A: Yes, the dolly spreads far enough and holds the weight of the tripod.

Q: 4. Is this lens compatible with Pentax MX film SLR?

A: The Pentax MX is a K mount so this lens will work.

Q: 5. Apparently, the Pentax smcp-FA77mm f/1.8 Limited does not have quick shift. Is it possible to manually focus this lens when desired?

A: Yes, it is possible to manually focus this lens when desired. Simply switch your camera's focusing mode to manual.

Q: 6. Does this tripod supports a Nikon D850 with a 70-200mm lens?

A: The K&F Concept D225C2 Carbon Fiber Tripod with Arca-Type Ball Head and Monopod will hold a Nikon D850 with a 70-200 lens, but if you want it to be the most rock solid without any movement at all I recommend purchasing a stronger and heavier tripod.

Q: 7. Are they compatible with the Backpacker S Carbon?

A: Yes, the MeFOTO SMBP Replacement Leg Stops would be compatible with the MeFOTO Backpacker S Carbon Tripod.

Q: 8. Could I mount a small led Light on this ball head?

A: Yes, any video light that offers a 1/4 female thread will adapt to the following ballhead.

Q: 9. What are the dimensions of the quick release plate?

A: As per the manufacturer, the plate on the K&F Concept SA254M2 is 1.89 x 1.89 x 0.39".

Q: 10. Is the ball head made of plastic or metal? Specifically is the part that tightens to hold the ball in place made of metal or plastic? Is the ball itself made of metal or plastic?

A: From one called up in the store, we determined that the ballhead is made of metal. The clamp, ball, and tension knob are all made of metal, but we can see that the ballhead uses a plastic mechanism for friction/tension.