The Heliopan 35.5mm #22 Orange Filter is a basic contrast filter, primarily for use with black and white film, that strongly darkens blues and greens, increases overall contrast, and is often used for outdoor photography to emphasize contrast and shadows. It is also well-suited for decreasing atmospheric haze when photographing with long lenses and to smooth skin tones for portraiture. 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.

#22 Filter for Enhanced B&W Contrast    4x Filter Factor, +2 Stops    35.5mm Front Filter Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Orange contrast filter for black and white film darkens blue skies and green 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 portraiture to smooth uneven skin tones.

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 35.5mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. What is the Wratten equivalent of this filter?

A: This filter is basically a #21.

Q: 2. Hello! is the holder ring provided with this filter? I need to fit this filter on a 52mm thread lens

A: The Heliopan Series 8 Infrared RG 850 Filter listed above is designed for usage on lenses that have a Series 8 bayonet filter mount. We have no lens mount adapters that would be compatible to connect this filter onto a lens that uses 52mm filter threads. If you own a lens with 52mm filter threads, I would instead recommend the Heliopan 52mm RG 850 Infrared Filter, B&H # HEIR85052, for your usage needs.

Q: 3. How many stops do you lose when using these filters?

A: The B+W #550/040 Orange MRC Basic Filter reduces light by three stops.

Q: 4. How many stops reduction for this orange filter?

A: Generally, the B+W #550/040 Orange MRC Basic Filter (67mm) will provide a half stop to a full stop of reduction.

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

A: The filter factor of the Leica E39 Green Filter is 1 stop.

Q: 6. How does this compare to Hoya or Sony brand circular polarizer?

A: Heliopan is a top class brand name

Q: 7. Regarding the Heliopan 52mm Slim Circular Polarizer SH-PMC Filter (705240), does anyone know if this filter will work with the larger Canon lenses (300mm f2.8, 400mm DO ...) that have rear mount drop-in filter holders. The issue is that 52mm screw in filters fit in the filter holder but when sliding the filter holder into the slot in the lens it does not fit because the filter is too thick. Is this particular filter slim enough to work with the above lenses? Please help.

A: Unfortunately this type of filter is built to be used on the outside of the lens, and is too thick to work inside a drop-in filter slot. Most circular polarizers, with their moving parts, will be too thick to use.

Q: 8. How big is the filter? Is it 100x100x2mm?

A: Following filter is a 4x 4x 0.07874. If a filter holder is needed please look into the following unit https://bhpho.to/3iGnSZj

Q: 9. 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: 10. What is the filter ring made out of?

A: The Leica E49 Orange Filter ring is brass.