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The Heliopan 40.5mm #11 Yellow-Green Filter is a basic contrast filter, primarily for use with black and white film, that moderately darkens blue and red tones, lightens green tones, and helps to subtly increase overall contrast. It also helps to better simulate a natural tonal response when working with panchromatic film under artificial lighting conditions. There is an approximate 2x filter factor with this filter, requiring an increase of 1 stop 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.
Yellow-green contrast filter for black and white film subtly darkens red and blue tones, increases contrast, and lightens greens and other foliage.
Offers a natural tonal response when working with panchromatic films under artificial lighting.
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 40.5mm front filter threads permits combining with other filters.
In the Box
Heliopan 40.5mm #11 Yellow-Green Filter
Limited Lifetime Warranty
Table of Contents
Approx. 2x (1 stop)
Moderately darkens reds, lightens greens, and increases contrast