MeterGlass

A pro light meter for film and large format: ~1.5° spot, Zone System, format masks from 135 to 8x10, filter and bellows compensation, shareable metering cards.

MeterGlass is a professional light meter built for film and large format photographers.

Metering • Average metering and ~1.5° spot metering with a live acceptance-angle readout; pinch to zoom in tighter • Zone System: multi-point capture and placement, scene contrast and N+/N- development suggestions, shareable metering cards • Calibration in 0.1 EV steps against a gray card or a meter you trust

Film formats • Nine format masks from 135 to 8x10 (including 6x12/6x17 panoramic) with in-mask metering • Live equivalent focal length per format, portrait/landscape framing, zoom with 5mm detents

Exposure • EV, aperture/shutter pairs, exposure compensation, illuminance (lux) and color temperature • Filter factors (yellow/orange/red/ND) and bellows extension compensation, folded into suggestions automatically • ISO 20–25600, apertures f/1–f/256, full/half/third-stop steps

Instrument-style interface, six languages, fully offline, zero data collection.