Keith Ingram Glasgow · UK-wide · worldwide

03 · Exposure · updated Jun 2026

Exposure & Log Reference

Where 18% grey and clip actually fall on the waveform — for your exact camera, log profile and ISO, with on-set calibration. Free to use.

Manufacturer
Camera
Log profile
ISO
⚠ On ARRI cameras, changing EI shifts the LogC encode — grey, clip and black IRE values change at each EI setting. Reference values here are for base EI 800 only. Use ARRI's LogC LUT Generator for other EI values.
Exposure offset ± 0.0 stops
← underexposed   −3 stops +3 stops   overexposed →
Calibration
▸
Zone reference

Reference only — every value here is a starting point, not a substitute for a calibrated waveform monitor on your own body. Spotted an error, or have measured values worth adding? Get in touch.

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Need someone to actually pull the exposure on set? I'm a Director of Photography based in Glasgow, available across Scotland, the UK and worldwide.