This 1-stop, Bay 3 Heliopan 1-Stop ND Filter Bay 3is a solid ND filter. This 0.3 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.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

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

0.3 Optical Density    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring    Increase Exposure Length    Bay 3 Front Filter Mount

ND 0.3 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 1-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.

Constructed from SCHOTT glass for optical clarity.

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

Dual mounts with Bay 3 front filter mount permits combining with other filters.

Related Questions and Answers

Q: 1. Would this Heliopan Variable ND filter fit a sony lens?

A: Whether this filter would fit depends on which Sony lens you own.

Q: 2. Will this filter also cut out IR?

A: This filter does not offer IR cut capability.

Q: 3. 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: 4. 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: 5. 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: 6. Will heliopan 77mm ND 3.0 filter cause vignette with canon 16-35mm f4 on full frame?

A: There is a chance you may experience vignette with this filter on the Canon 16-35mm f/4 on a full frame sensor at the widest focal length and highest aperture, but otherwise, you shouldn't experience any vignette.

Q: 7. 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: 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. 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: 10. What's the actual filter weight (not package shipping weight) in grams. Looking for options for drone lens...?

A: Sorry, we do not have the actual weight on record and we cannot weigh it. I would subtract a few ounces to get at the weight you need to know.