The Heliopan 35.5mm #8 Medium Yellow Filter is a basic contrast filter, primarily for use with black and white film, that slightly darkens skies, helps to cut through haze, and improves overall contrast. It is the most common contrast filter for black and white photography, producing an accurate tonal range and compensating for the blue sensitivity of panchromatic film. There is a 2.5-3x filter factor with this filter, requiring an increase of 1.3 to 1.5 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.

#8 Filter for Enhanced B&W Contrast    2.5-3x Filter Factor, +1.3-1.5 Stops    35.5mm Front Filter Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Medium yellow contrast filter for black and white film subtly darkens skies, cuts through haze, and gives greater contrast overall.

Produces accurate tones in order to compensate for panchromatic film's blue sensitivity.

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. 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: 2. 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: 3. Will this create vignetting at 16mm when put on Sony 16-35mm GM lens?

A: It is not unusual to experience vignetting when using ultra wide lenses.

Q: 4. So, does this Digital Filter pretty much an even higher quality, more affective UV Filter?

A: Filters are made of the filter material, the glass it is in, the glass coatings and the metal ring. The higher the cost, the higher the quality of all materials and the better the optical result. After a point, however, it is like cars where you can get a comfortable Ford Focus (like Hoya) or a luxury BMW (like Heliopan.)

Q: 5. What sizes, expressed in mm, are Series 7 filters available in?

A: A series 7 filter is a unique size as all series filters are. The fiter size in millimeters would be equivalent to 50.8mm.

Q: 6. Does this filter have front lens threads?

A: Yes, the Heliopan 40.5mm UV SH-PMC Filter has a 40.5mm front filter thread.

Q: 7. What size should I buy to store a B+W Master 49mm filter?

A: The B+W Single Filter Box with Foam (Small) BH #BWFBS • MFR #65-1093973 is the correct size for filters 52mm or smaller.

Q: 8. I ordered a Sony RX1R from you that was delivered today. Will this filter work with the RX1R? If not, which filter do you recommend. Thanks.

A: Yes, that filter is the correct size for your camera's lens. It will work very well.

Q: 9. Will this hold a softie windscreen in addition to the mic?

A: The Alfa Case is designed to accommodate mic only.

Q: 10. What size in millimetres is Series 7 or 8?

A: The diameter of this Heliopan Series 8 Infrared RG 715 (88A) Filter is 63.5mm, but this filter does lack threading.