Development time

FILM Ferrania P30 in Rodinal

14:00 at 20°C, 1+50 dilution, box speed.

Start timer · 14:00

Time

14:00

Standard

Dilution

1+50

Temperature

20°C

Box speed

ISO 80

B&W

Development time

Dilution	EI	Time	Temp	Agitation	Timer
1+50	80	14:00Not yet verified	20°C / 68°F	Standard	Start timer

EI is the speed the film was rated at when shooting. Times marked “not yet verified” come from secondary sources and haven’t been checked against a manufacturer datasheet.

Other temperatures

18°C	19°C	20°C	21°C	22°C	23°C	24°C
17:30	15:41	14:00	12:36	11:12	10:05	9:06

Calculated from the 20°C time using Ilford’s temperature compensation factors, not taken from a datasheet. Most B&W developers behave well between 18°C and 24°C.

Mixing

Dilution	300 ml (one 35mm roll)	500 ml (one 120 roll)
1+50	5.9 ml developer + 294 ml water	9.8 ml developer + 490 ml water

How they work together

Rodinal: Prominent grain, high acutance, full film speed, variable contrast. Sharp, dramatic, distinct edge effects.
FILM Ferrania P30: Revived cinema-origin emulsion inspired by Ferrania's historic formulations. Very high contrast with crushed shadows. High silver content (5g/sqm). Requires accurate metering - shoot at exactly ISO 80.
Notes on this pairing: Community-sourced time. Inversions first 30s, then 10s each minute.

P30 in other developers

D-76