The Heliopan 77mm #22 Orange Filter is designed to enhance contrast, especially with black-and-white film, by significantly darkening blues and greens. It is commonly used in outdoor photography to highlight shadows and improve overall contrast. The filter also reduces atmospheric haze when using long lenses and helps to smooth skin tones in portrait work. With an approximate 4x filter factor, it requires a 2-stop increase in exposure. Both front and rear surfaces have anti-reflection coatings to boost light transmission by minimizing reflections, ghosting, and scattered light, while providing protection and easier cleaning. Made from Schott glass, this filter ensures superior optical clarity and color accuracy, and its brass ring offers durability and prevents jamming.

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