EMG is a minus-green (magenta-balance) broadband filter that trims mid-green while keeping blue and red output high, then intentionally rolls off in the far-red. Transmission runs ~80–90% from ~410–700 nm, with a controlled green dip of ~76–83% around ~520–560 nm. Long-red stays strong at ~92–95% from ~640–720 nm, then drops quickly beyond ~735–745 nm—below ~30% by ~760 nm and ~5–10% by ~780 nm.
Key advantages
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Minus-green tuning — targeted notch across ~520–560 nm neutralizes LED/fluorescent “plus-green” without pushing frames overly magenta.
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High colour headroom — ~80–90% T through most of 410–700 nm, with ~92–95% T in the 640–720 nm band for natural skin tones and exposure latitude.
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Far-red control — sharp roll-off past ~740 nm curbs 740–780 nm leakage that can lift red channels, haze lenses, or skew sensors.
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Smooth, low-ripple curve — predictable correction across dimming levels and fixture types.
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Production-ready build — hard dielectric stack resists abrasion and humidity; optional rear-surface AR and slight wedge suppress ghosts and flare.
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Custom formats — Borofloat®, Eagle XG or D263 T (0.21–3.8 mm) for high-temp use to ~450 °C; economical soda-lime for ≤150 °C. Custom sizes 5–450 mm.
Typical applications
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Cinema/TV lighting — lift CRI/TLCI by shaving mid-green while keeping reds strong; rein in far-red spill from modern LEDs.
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Photography & events — balance mixed LED/fluoro rigs for cleaner whites and more believable skin tones.
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Stage & architectural — reduce green spill and deep-red glare that can upset cameras and audience perception.
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Retail & museums — more accurate product/art colour with minimal light loss.
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Machine vision — tame green-heavy sources and suppress far-red bloom for stable measurements.
Need test chips tomorrow or thousands next quarter? EMG filters are coated and cut-to-size (including dicing) to your exact spec—fast.
