This 4-stop, Bay 70 Heliopan ND Filter is a solid ND filter. This 1.2 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.

1.2 Optical Density    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring    Increase Exposure Length    Bay 70 Front Filter Mount

ND 1.2 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 4-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 70 front filter mount permits combining with other filters.

Related Questions and Answers

Q: 1. This is 77mm but suggested as an accessory for the 85mm Sony 1.4 Gmaster lens.I'm confused. Will it fit the Sony 85mm Gmaster? If it will, what's up with the disparity in mm sizes?Thanks.

A: Hi Ben, I have no idea about this question. It fits my Canon lenses and is a great filter. Steve

Q: 2. What color aberrations are there?

A: The Moment 67mm Variable Neutral Density 0.6 to 1.5 Filter (2 to 5-Stop) does not exhibit and color aberrations.

Q: 3. is it ok to stack two of these the 3 stop and the 2 stop? will it effect the picture quality? or create any color shift if stacked? also will it work if stacked with cp?

A: Stacking filters will always degrade the image quality

Q: 4. Does it have a front filter thread to stack another filter?

A: Yes the Hoya 77mm ND (NDX8) 0.9 Filter (3-Stop) has 77mm front threads so you can stack additional filters.

Q: 5. Does it come with a case? Thanks!

A: it comes in a hard plastic case with some padding.

Q: 6. Can I stack another 58mm filter on top of this one?

A: The Bower 58mm Variable Neutral Density Filter has a 62mm front threading. If you want to stack another filter in the front it would need to be a 62mm filter. Alternatively you can put the other 58mm filter in bottom and this one on top. Always be careful to avoid vignetting when stacking filters.

Q: 7. What is outside diamater? I want to attach a screw in hood.

A: The outside diameter is 62mm.

Q: 8. Is it really made in Japan like the picture shows?

A: Yes, this filter is made in Japan.

Q: 9. I already bought 3 stop filter of this. Can you help me where I can get 6 stop filter?

A: Here is the link for a high quality 77mm 6 stop filter by Hoya. https://www.bhphotovideo.com/c/product/1012350-REG/hoya_xpd_77nd64_77mm_pro_nd_64x.html

Q: 10. Does this filter have a hard stop at each end of the range? My 62mm Bower variable ND does, just wondering if this version does as well. Thanks.

A: Yes, this filter has hard stops.