FILM Ferrania Orto in D-76

EI is the speed the film was rated at when shooting. Evidence says where each time comes from: the manufacturer’s own data, a named test, a compilation or several agreeing reports (community consensus), or one person’s report. Times marked “not yet verified” come from secondary sources and haven’t been checked against a manufacturer datasheet. Where sources give different times, every one is listed and marked “sources differ”.

Calculated from the 20°C (68°F) time using Ilford’s temperature compensation factors, not taken from a datasheet. Most B&W developers behave well between 18–24°C (64–75°F).

D-76

Fine grain, moderate acutance, full film speed, normal contrast. Long density scale with excellent shadow detail.

FILM Ferrania Orto

Orthochromatic version of the P30 cine-derived emulsion (2023), with high silver content and strong contrast; development close to P30.

Notes on this pairing

• Small tank: continuous inversions. Ferrania says its Orto guide is best practice collected from user feedback, not a classic datasheet.
• Small tank: inversions for 10 s each minute. Ferrania says its Orto guide is best practice collected from user feedback.

• 510-Pyro

  60:00

  1+500 · EI 50 · 21°C

• Diafine

  6:00

  Stock · EI 50 · 21°C

• HC-110

  30:00

  1+119 · EI 50 · 20°C

• Rodinal

  14:00

  1+50 · EI 50 · 20°C

• Kodak Tri-X 400

  6:45

  Stock · EI 400 · 20°C · 21 variants

• Kodak T-Max 400

  7:30

  Stock · EI 400 · 20°C · 13 variants

• Ilford HP5 Plus

  7:30

  Stock · EI 400 · 20°C · 6 variants

• Ilford Delta 400

  9:30

  Stock · EI 400 · 20°C · 9 variants

• Ilford FP4 Plus

  8:00

  Stock · EI 125 · 20°C · 9 variants

• Foma Bohemia Fomapan 400 Action

  7:30

  Stock · EI 400 · 20°C · 2 variants

• Harman Technology Kentmere Pan 400

  9:30

  Stock · EI 400 · 20°C · 5 variants

• Harman Technology Kentmere Pan 100

  9:00

  Stock · EI 100 · 20°C · 8 variants

All 42 films in D-76