Reads and displays T-stops exactly like your LIT DUO 1 — big number plus the small tenths digit.
Meter your key (dome at the face, aimed at the lens). Enter it just like the meter shows it: 7.0 base + 2 tenths.
Pick your ratio.
The screen shows what your meter should read on the fill side — in the same format.
Block the key, trim the fill light until your DUO 1 matches the screen.
Flip to FILL → RATIO if you have both readings and want the ratio you're in.
FILL FINDER
DUO 1 Edition · by Ezra Dave Productions
◂ ISO ▸
ANGLE
FPS
SHUTTER 1/48
LENS T
KEY — ENTER WHAT YOUR METER SHOWS
0
reading: T4.0₀ · big number + small tenths digit
CONTRAST RATIO
YOUR METER SHOULD SHOW · FILL SIDE
8.00
exact T8.00 · 2.0 stops below key
block the key · trim fill light until the DUO 1 matches this
FILL — ENTER WHAT YOUR METER SHOWS
0
reading: T8.0₀
YOU ARE IN A
4:1
2.0 stops apart
KEYFILL
T4
T8
HOW TO METER: Dome at the face, pointed at the lens. Read the key with everything lit. Block the key so only fill hits the dome, and trim the fill light until your meter matches the target. Same dome spot for both readings.