Sam Gorman

Calculate total light loss factor, retained light, and expected light loss from a known LLF or separate maintenance factors.

Estimate outdoor light pole spacing, pole count, lumens per pole, and rough foot-candles for a first-pass layout.

Estimate lux at your subject from a video light rating, distance, beam angle, loss, and target lux.

Find manual flash aperture, distance, power, or guide number with ISO, power, and modifier loss adjustments.

Estimate aquarium PAR targets, daily light amount, surface PAR needed, coverage size, and simple tank volume.

Estimate soccer field fixture count, lumens, average foot-candles, lux, power use, and energy cost from field and fixture specs.

Estimate basketball court foot-candles, fixture count, fixture lumens before losses, lux, and power for a planning check.

Estimate fixture count, maintained lux, foot-candles, power use, and monthly energy cost for tennis court lights.

Estimate stadium LED fixtures, field brightness, installed power, event energy use, and cost from area, target light, and fixture specs.