Ilford FP4 Plus in T-Max Developer

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).

T-Max Developer

High acutance, full film speed, normal contrast. Enhanced shadow detail in normally processed and push-processed film.

Ilford FP4 Plus

Often considered a benchmark for medium speed B&W. Notable sharpness and fine grain. Well-suited for high-quality enlargements.

• 510-Pyro

  20:25

  1+100 · EI 125 · 20°C · 2 variants

• D-76

  8:00

  Stock · EI 125 · 20°C · 9 variants

• Diafine

  6:00

  Stock · EI 250 · 20°C

• HC-110

  4:30

  1+15 · EI 125 · 20°C · 5 variants

• ID-11

  8:30

  Stock · EI 125 · 20°C · 8 variants

• Ilfosol 3

  4:15

  1+9 · EI 125 · 20°C · 3 variants

• Ilfotec DD-X

  10:00

  1+4 · EI 125 · 20°C · 3 variants

• Ilfotec HC

  4:00

  1+15 · EI 125 · 20°C · 7 variants

All 16 developers for FP4 Plus

• Kodak Tri-X 400

  6:00

  1+4 · EI 400 · 20°C · 7 variants

• Kodak T-Max 400

  6:45

  1+4 · EI 400 · 20°C · 16 variants

• Ilford HP5 Plus

  6:30

  1+4 · EI 400 · 20°C · 4 variants

• Ilford Delta 400

  6:30

  1+4 · EI 400 · 20°C · 6 variants

• Foma Bohemia Fomapan 400 Action

  7:00

  1+4 · EI 400 · 20°C

• Ilford Ilford Delta 100

  7:00

  1+4 · EI 100 · 20°C · 3 variants

• Kodak T-Max 100

  7:30

  1+4 · EI 100 · 20°C · 10 variants

• Kodak T-Max P3200

  12:00

  1+4 · EI 3200 · 20°C · 15 variants

All 24 films in T-Max Developer