The Heliopan 30.5mm #15 Dark Yellow Filter for Photographyis a basic contrast filter, primarily for use with black and white film, that very strongly darkens skies and blues, increases contrast, and is often used for outdoor photography to emphasize contrast and shadows. There is an approximate 4x filter factor with this filter, requiring an increase of 2 stops for normal exposure.

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.

#15 Filter for Enhanced B&W Contrast    4x Filter Factor, +2 Stops    30.5mm Front Filter Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Dark yellow contrast filter for black and white film strongly darkens skies and blue tones, cuts through haze, and increases overall contrast.

Commonly used for landscape photography to emphasize blue skies and give clouds more visual depth. Also used for aerial and micro photography applications where added contrast can be used to enhance detail.

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 threading with 30.5mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. What additional features are found in the Series 8 filters when compared to those of Series 7?

A: Series 7 or Series 8 simply refers to size only.

Q: 2. is the outside made of a hard or soft material? I'm worried about it bending.

A: The outside is soft, but semi-rigid to protect the filters.

Q: 3. Will this fit a PVS-14 objective lens?

A: This will not work with that Model.

Q: 4. Is this pouch capable of storing the Lee 100 filter holder [old model] and as well as their 105mm C. Polarizer?

A: Yes it large enough to hold your Lee filter with room to spare

Q: 5. Does it work for 4x4 and 4x5.6 filters and the Nisi mattebox?

A: Yes, this will hold up to 4x5.56 filters as well as the Nisi filter holder.

Q: 6. Does this filter cause any color shifts?

A: According to the manufacturer, the Kolari Vision R Dark VND Filter (6-15 Stops) may cause color shifting and ineffective light stoppage when combining with infrared photography. Otherwise, the filter should not cause color shift.

Q: 7. Can another filter be attached to the front of this one? (I.e. so you have two circular 77mm filters on your lens at once.)

A: Yes. I have 2 of those filters and I just checked - they can be stacked.

Q: 8. Is this comptabile with canon ef to R mount lens adapter with slot for filters?

A: Yes, the Kolari Vision R Dark VND Filter (6-15 Stops) as well as other drop-in filters are compatible with the Canon EF to RF drop-in adapter.

Q: 9. Will this hold 82mm round filters?

A: Yes, the Lowepro GearUp Filter Pouch 100 (Gray) will hold 82mm filters.

Q: 10. Does this work with Canon EF to R lens adapter with drop in filter slot?

A: The Kolari Vision R Dark VND Filter (6-15 Stops) is compatible with the Canon Drop-In Filter Mount Adapter EF-EOS R.