This 3-stop, 46mm Heliopan 46mm ND Filter 3-Stopprovides a 3-stop exposure reduction. Its 0.9 optical density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed without overexposing your image. By slowing your exposure time, you can create motion blur for special effects or to convey a sense of movement. Opening your iris allows you to create shallow depth of field, which can help isolate your subject. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.

To prevent internal ghosting and reflections, each glass surface includes four layers of anti-reflection coating. Together, these eight coatings offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters.

This Heliopan neutral density filter is constructed from Schott glass for increased optical clarity as well as color fidelity and features a brass filter ring for enhanced durability and jamming prevention.

0.9 Optical Density    Multicoated    Schott Glass    Brass Ring    46mm Front Filter Threads    Knurled Sides    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture

0.9 neutral density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 3-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Filter does not affect coloration of the image and is ideal for use with other filters.

Each glass surface includes four layers of anti-reflection coating to prevent internal ghosting and reflections.

Constructed from SCHOTT glass for optical clarity.

Brass filter ring helps to prevent jamming and provides additional strength.

Side knurlings to provide a more textured grip when mounting or removing it from a lens.

46mm front filter threads allow for use with other filters.

Related Questions and Answers

Q: 1. What's the diameter of the lens cap to buy for the Heliopan 46mm variable ND filter? Trying not to remove the filter each time the camera is kept in the bag, thus a lens cap would be useful.

A: The filter can only be used with a push on lens cap. There are none that are specific for that filter. This one is very close but can at times slip off.

Q: 2. I've got a few questions about this heliopan ND filter i was hoping i can get help on.1. Is this a multi-coated filter?2. Will it vignette with wide angle lenses (i.e. 16-35mm Canon f4L lens)?3. does it have front filter threads?

A: Not sure on the multi coating, but I believe they are at least single coated. This filter is relatively thin, so vignetting should not be a problem on that lens. Yes, they have front filter threads. With that said, I would recommend checking out the Firecrest ND filters. They are very thin, have front threads and they have great multi coating.

Q: 3. Will this fit on a Rokinon 35mm F1.4 AF Series II Full Frame Wide Angle (Sony E) Lens?

A: No, the Heliopan 35.5mm ND 1.8 Filter (6-Stop) is not compatible with the 67mm filter thread of the Rokinon 35mm f/1.4 AF II Lens for Sony E-Mount Cameras.

Q: 4. Will this work with Leica Q3?

A: Yes, the Heliopan 49mm Variable Gray ND Filter is compatible with the Leica Q3 camera.

Q: 5. What is the weight of this filter?

A: The manufacturer does not provide the exact weight of the filter, but the shipping weight (which includes the package) is 1.6 oz. The filter itself (without the packaging) would be approximately half of that -- 0.8 oz. (23 g).

Q: 6. Hello, will this ND filter setup work with a Leica R lens? if so, which ones? I have a 50mm f2 Summicron, & a 24mm Elmarit f2.8. I need an ND filter that will work with both of these. Thanks very much!Julian Wayser

A: There are many versions of the Leica 50mm f/2 Summicron-R lens. Early versions (1964-1976 black; 1964-1966 chrome) were a Series VI + 14160 (Series VI - E44 filter adapter) and later II models (1976-2009 black) are Internal thread for screw-in type filters E 55 size with a Built-in, telescopic hood. The 24mm f/2.8 Elmarit-R was a Series 8 and our records show some may have been an E60. 72mm to Series 7 Filter Adapter B&H # LEARS77282mm to Series 8 Filter Adapter B&H # LEARS88255mm NDs http://bhpho.to/1m7oEIA

Q: 7. What if live view is used?

A: To my original answer, I should add that on a Leica M, the EXIF data will probably show a different aperture to the one on the lens.The Ms have no electrical connection between camera body and lens, so the camera infers aperture for EXIF by comparing light intensity metered at the shutter compared to the ambient light on the body. (That's what the small light meter hole on the front top of the body is for.)

Q: 8. Does this fit in drop in filterholder for an older nikon 300mm 2.8 ThanksJoe

A: In order to answer your question, I will need to know which exact version of the Nikon 300mm f/2.8 you are referring to. Please send an email to askbh@bhphotovideo.com and write Attn: Heather so that I can assist you in the best way possible.

Q: 9. does this fit a fujifilm 28mm fixed lens on a X100V digital camera?

A: The Fuji X1000V needs this adapter in order to accept 49mm filters: https://bhpho.to/31yCwqK. Once the adapter is attached, this 49mm filter can be used: https://bhpho.to/3SRomdU

Q: 10. Will this fit my 3.5F Rolleiflex ?

A: Yes, the Heliopan Bay 2 ND 1.5 Filter (5-Stop) is compatible with the Rolleiflex 3.5 F camera.