The 37mm Urth ND Lens Filter Plus+ 37mm 2-Stopfrom Urth ND Lens Filter Plus+ 37mm 2-Stopprovides a fixed 2 f-stop light reduction for better control with long exposure and depth of field techniques in low light. With less light entering your camera, you can also use wider apertures in low light for a beautiful shallow depth of field effect without overexposing images. Cinematographers can use the ND Filter Plus+ to create more cinematic effects in low light without losing quality or overexposing the shot. The Plus+ filter features 20-layers of nano-coating, which provides easier cleaning and better protection against water, oil, and scratches. These layers also provide a higher maximum light transmission and a more consistent transmission curve for truer light reduction.

1.2 Optical Density    20-Layer Nano-Coating    B270 Schott Optical Glass    Ultra-Slim Rim    Double-Threaded for Stacking Filters

The filter is double-threaded for stacking filters or using screw-mount lens caps.

The consciously designed ultra-slim rim avoids vignetting and our durable magnalium is guaranteed for life.

Reduce light to 25% to maintain your desired settings in overly bright conditions or create dramatic motion blur and shallow depth of field in low light conditions.

Urth Fixed ND4 Filter Plus+ lets you capture motion blur and depth of field effects in low light. It is great for landscape photography and cinematic effects in videography.

The B270 Schott optical glass is coated with a 20-layer nano-coating for truer light transmittance, better protection, and easier cleaning.

Related Questions and Answers

Q: 1. does it have front filter threads?

A: The K&F Concept ND8-ND2000 Nano-X Variable ND Filter with Multi-Resistant Coating (77mm) does not have front filter threads.

Q: 2. Do these have stops at min/max?

A: According to Urth, the Plus+ ND filters have hard stops at maximum and minimum stops.

Q: 3. will this work with the Canon RF 28-70mm 2.0?

A: Yes this filter is compatible with the Canon RF 28-70mm f/2 lens.

Q: 4. Will this work with the Sony A7SIII?

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

Q: 5. 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: 6. This filter popped up while I was looking for a Swarovski ATS 80 case. Does this fit on the Swarovski spotting scope?

A: Yes, the Swarovski ATS-80 25-50x80mm HD Spotting Scope accepts 82mm filters.

Q: 7. 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: 8. What is the difference between NXT Plus UV and Hoya 52mm Ultraviolet UV (C) Haze Multicoated Filter (HOUVMC52)?

A: The The UV(C) has the UV properties in the multi-coatings while the NXT Plus has the UV properties in the glass. Also the NXT Plus is constructed from Schott B270 glass for increased clarity as well as color fidelity and it has knurled edges for a more textured grip when mounting or removing it from a lens.

Q: 9. I've never heard of magnalium. I always by brass rings because they don't bind like aluminum rings. How does magnalium compare?

A: Magnalium is an aluminum alloy with 10-5% magnesium and 90-95% aluminum. It is light, strong, and resists corrosion. In addition, the strength and hardness of aluminum increase when it is alloyed with such substances as magnesium, manganese, nickel, chromium, zinc, iron, copper, and silicon. Magnalium—lighter and more workable than aluminum—is used in making metal mirrors and scientific instruments. Since it is 90-90% aluminum, cross threading may still occur

Q: 10. Will the lens hood of Sony 100-600 fit with filter attached?

A: Yes, you can attach the dedicated lens hood in the Sony FE 200-600mm f/5.6-6.3 G OSS Lens while the Urth 95mm ND8-128 Variable ND Lens Filter Plus+ (1 to 5 Stop) is connected to the fornt thread of the lens. However you will not be able to rotate your ND filter once the lens hood is connected.