Reciprocity Compensation
Dropdown films • Ilford (Tc = Tmp) + Kodak (tables) • accent #ff1c5a
Film & metered time
—
—
You can type formats like 1.3, 1:30, 90s or 1m 30s.
Minutes mode treats a bare number as minutes.
Result
–
= — s · —:—
Compensation:
–
stops
Stops = log₂(Tc/Tm). Kodak color-neg tables come from E-31 stop offsets converted to seconds at the specified metered times.