rolllog

HARMAN technology · also FP4+

Ilford FP4 Plus

ISO 125 black-and-white negative

Medium-speed ISO 125 black-and-white film with very fine grain and high sharpness, usable from EI 50 to EI 200.

Type
Black-and-white negative
Box speed
ISO 125/22°
Process
B&W
Formats
120, 135, sheet
Base
acetate
DX coded
yes
Status
in production
Source document
FP4 PLUS Technical Information, rev. 2018-11

Exposure

LightFilterEI / adjust
Daylightnone125

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Reciprocity

No correction needed from 1/10,000 s to 1/2 s.

Corrected time: Ta = Tm^1.26

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Processing

  • B&WNormal
  • B&WPush 0.67 — EI 200: see development times for this EI.
  • B&WPull 1.33 — EI 50: see development times for this EI.

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Development times 79

Acufine 2 · EI 125, 200
DilutionEI°CAgitationTime
stock12520intermittent4:00
stock20020intermittent6:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Agfa Rodinal 4 · EI 125, 200
DilutionEI°CAgitationTime
1+2512520intermittent9:00
1+5012520intermittent15:00
1+2520020intermittent13:00
1+5020020intermittent20:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ID-11 8 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+15020intermittent8:00
1+35020intermittent17:00
stock5020intermittent6:30
1+112520intermittent11:00
1+312520intermittent20:00
stock12520intermittent8:30
1+120020intermittent15:00
stock20020intermittent10:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOSOL 3 2 · EI 125
DilutionEI°CAgitationTime
1+1412520intermittent7:30
1+912520intermittent4:15

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOTEC DD 3 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+45024machine dip and dunk7:00
1+412524machine dip and dunk8:30
1+420024machine dip and dunk11:30

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOTEC DD-X 3 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+45020intermittent8:00
1+412520intermittent10:00
1+420020intermittent12:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOTEC HC 5 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+315020intermittent6:00
1+1512520intermittent4:00
1+3112520intermittent8:00
1+1520020intermittent5:00
1+3120020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOTEC LC29 7 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+195020intermittent6:00
1+295020intermittent8:00
1+1912520intermittent8:00
1+2912520intermittent12:00
1+912520intermittent4:00
1+1920020intermittent9:00
1+920020intermittent5:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD ILFOTEC RT RAPID 6 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+1+25026machine roller transport0:40
1+1+55026machine roller transport0:55
1+1+212526machine roller transport0:45
1+1+512526machine roller transport1:05
1+1+220026machine roller transport0:54
1+1+520026machine roller transport1:24

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD MICROPHEN 6 · EI 125, 200
DilutionEI°CAgitationTime
1+112520intermittent10:00
1+312520intermittent14:00
stock12520intermittent8:00
1+120020intermittent14:00
1+320020intermittent18:00
stock20020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

ILFORD PERCEPTOL 6 · EI 50, 125
DilutionEI°CAgitationTime
1+15020intermittent13:00
1+35020intermittent17:00
stock5020intermittent9:00
1+112520intermittent15:00
1+312520intermittent21:00
stock12520intermittent12:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Kodak D-76 9 · EI 50, 125, 200
DilutionEI°CAgitationTime
1+15020intermittent9:00
1+35020intermittent14:00
stock5020intermittent6:00
1+112520intermittent11:00
1+312520intermittent16:00
stock12520intermittent8:00
1+120020intermittent15:00
1+320020intermittent20:00
stock20020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Kodak HC-110 5 · EI 50, 125, 200
DilutionEI°CAgitationTime
B5020intermittent6:00
A12520intermittent4:30
B12520intermittent9:00
A20020intermittent6:00
B20020intermittent12:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Kodak T-Max 2 · EI 125, 200
DilutionEI°CAgitationTime
1+412520intermittent8:00
1+420020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Kodak T-Max RS 1 · EI 125
DilutionEI°CAgitationTime
stock12524machine dip and dunk7:30

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Kodak Xtol 4 · EI 125, 200
DilutionEI°CAgitationTime
stock12520intermittent8:30
stock12524machine dip and dunk7:00
stock20020intermittent10:00
stock20024machine dip and dunk10:30

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Tetenal Ultrafin Plus 2 · EI 125, 200
DilutionEI°CAgitationTime
1+412520intermittent6:00
1+420020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Tetenal Ultrafin SF 4 · EI 125, 200
DilutionEI°CAgitationTime
1+112520intermittent11:00
stock12520intermittent7:00
1+120020intermittent14:00
stock20020intermittent9:00

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Time in min:sec. Starting points from the source; test with your own process.

Shop prices

  1. £10.56Parallax PhotographicUKIn stock
  2. £13.50Castle CamerasUKIn stock

Price history GBP per roll

Now
£10.56
Lowest
£10.56 27 Oct
Highest
£13.50 26 Oct
Change
−21.8%
£10.00£11.00£12.00£13.00£14.0030 Sept7 Oct14 Oct21 Oct28 Oct

Lowest in-stock price Shop average

Per roll, incl. VAT, excl. shipping. Each shop's own currency, not converted. Checked 28 Oct, 13:13 UTC. Line: last 30 days.

curl /api/v1/films/ilford-fp4-plus/prices?format=135&exposures=36&country=GB

Formats

  • 1200.11 mm acetate base
  • 13517 m · 0.125 mm acetate base
  • 13530.5 m · 0.125 mm acetate base
  • 13524 exp. · 0.125 mm acetate base
  • 13536 exp. · 0.125 mm acetate base
  • sheet0.18 mm polyester base

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

On the shelf

  • 13536 exp.019498649653

Source: Focus Nordic (distributor)

Handling and storage

Darkroom
Total darkness
Store unexposed film
at 20 °C or below
Refrigerate
yes, for longer storage
Freezing
allowed (warm up before opening)
Exposed film
Process as soon as practical after exposure.

Source: HARMAN technology FP4 PLUS Technical Information (2018-11)

Sources

  1. DatasheetHARMAN technology FP4 PLUS Technical Information (2018-11) · checked 2026-10-15
  2. DistributorFocus Nordic · checked 2026-10-26

Unknown values are left out, never guessed. Corrections welcome.

Same data, as JSON

curl /api/v1/films/ilford-fp4-plus

Or ask an AI assistant through the MCP server: get_film("ilford-fp4-plus").