The Heliopan 30.5mm #15 Dark Yellow Filter is 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. Does it have a shoulder strap?

A: Unfortunately this does not come with a shoulder strap since there is no designated place to attach one.

Q: 2. will polar pro summit filters fit in this case?

A: Yes.

Q: 3. Would appreciate comments on performance with regards to potential for flaring/ haloing of lights. Is the multi-coating adding any potential issues?

A: The Heliopan 105mm High-Transmission Circular Polarizing Multi-Coated Slim Filter is a multi-coated filter that has eight (8) coatings on each side of the filter to reduce the occurrence of internal glare/flare and to maximize reflection reduction that is caused from off-axis light bouncing around the elements inside the lens on which the filter is attached, and to ensure optimal light transmission. Do note that, as with all multi-coated filters, this is designed to reduce INTERNAL flare/glare and reflections. If you aim the lens directly at a light source or light is entering the lens at an oblique angle on the front of the lens, flare/glare can still be created, and as such, it is still recommended to use a lens hood to reduce external flare (flare cannot be eliminated if you aim the lens directly at a light source, regardless if you are using a multi-coated filter or lens hood. That is just physics.)

Q: 4. Will Cokin P Series filters fit in this case if so how many?

A: Yes, this case will hold 10 Cokin P filters.

Q: 5. Will this fit a PVS-14 objective lens?

A: This will not work with that Model.

Q: 6. Will 4x4 filters that are 4mm thick fit into the dividers?

A: Yes, the dividers will hold 4x4 or 4x6 filters.

Q: 7. 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: 8. How thick is the filter itself? This one and the Heliopan 105mm #710562 do not list the ring/filter thickness.

A: The thickness is approximately 6.5mm on 710561 and 5mm on 710562.

Q: 9. Why the pocket is half covered ? Is it like that or just for commercial ? If it true isn't The filter is exposed not totally safe might get scratch ?

A: The pockets for the circular filters in the Lowepro GearUp Filter Pouch 100 (Dark Gray) do not go all the way to the top. Larger filters will be somewhat exposed. The benefit is it makes them easier to access.

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.