Optical diffusion filter with fine glitter particles that softens contrast and adds a delicate shimmer to light sources.
Technical Details
Glimmerglass filters are made of optical glass with embedded mica particles ranging from 0.1-0.5mm in diameter. Strengths range from 1/8 (minimal diffusion) to 5 (strong softening). The filter transmits 85-95% of incident light depending on its strength. Standard sizes include 4x4", 4x5.65", 6.6x6.6", and screw-on versions from 52mm to 95mm. Mica concentration varies from 2% (Grade 1/8) to 15% (Grade 5).
History & Development
Tiffen introduced Glimmerglass in 1978 after cinematographers sought cleaner alternatives to Vaseline on clear glass filters. Schneider-Kreuznach developed the "True-Streak" variant in 1985, featuring elongated mica particles. In 1992, Formatt-Hitech expanded the range to include colored Glimmerglass variants in Amber, Blue, and Magenta. Modern Digital Glimmerglass filters (since 2008) account for the higher sharpness of digital sensors through finer particle distribution.
Practical Application in Film
Michael Ballhaus used Glimmerglass 2 for the ballroom scenes in "Goodfellas" (1990) to create the glamorous 1950s look. Roger Deakins employed Glimmerglass 1/2 in "Skyfall" (2012) for Bond close-ups, combined with LED panels for controlled highlights. The filter works optimally with backlight or strong point light sources. Modern workflows often use Glimmerglass only for close-ups, while master shots remain unfiltered to preserve detail.
Comparison & Alternatives
Glimmerglass differs from Pro-Mist by its highlight component – Pro-Mist only diffuses, while Glimmerglass also enhances light points. Black Pro-Mist preserves black levels better than Glimmerglass. Digital alternatives like DaVinci Resolve's "Glow" plugin simulate the effect but do not achieve the optical quality of real mica particles. Cinematographers choose Glimmerglass for period pieces and glamour shots, Pro-Mist for more natural skin softening.