rolllog

HARMAN technology · also Delta 100

Ilford Delta 100 Professional

ISO 100 black-and-white negative

ISO 100 professional black-and-white film with very fine grain and high sharpness, in 35mm, 120 and sheet sizes.

Type
Black-and-white negative
Box speed
ISO 100/21°
Process
B&W
Formats
120, 135, sheet
Base
acetate
DX coded
yes
Status
in production
Source document
DELTA 100 PROFESSIONAL Technical Information, rev. 2023-04

Exposure

LightFilterEI / adjust
Daylightnone100

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Reciprocity

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

Corrected time: Ta = Tm^1.26

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Processing

  • B&WNormal
  • B&WPull 1 — EI 50: see development times for this EI.
  • B&WPush 1 — EI 200: see development times for this EI.

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Development times 70

Acufine 1 · EI 200
DilutionEI°CAgitationTime
stock20020intermittent5:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Agfa Rodinal 4 · EI 50, 100
DilutionEI°CAgitationTime
1+255020intermittent7:00
1+505020intermittent10:00
1+2510020intermittent9:00
1+5010020intermittent14:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ID-11 8 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+15020intermittent10:00
1+35020intermittent15:00
stock5020intermittent7:00
1+110020intermittent11:00
1+310020intermittent20:00
stock10020intermittent8:30
1+120020intermittent13:00
stock20020intermittent10:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ILFOSOL 3 2 · EI 100
DilutionEI°CAgitationTime
1+1410020intermittent7:30
1+910020intermittent5:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ILFOTEC DD 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+45024machine dip and dunk8:00
1+410024machine dip and dunk9:30
1+420024machine dip and dunk12:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ILFOTEC DD-X 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+45020intermittent8:00
1+410020intermittent10:30
1+420020intermittent12:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ILFOTEC HC 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+315020intermittent5:00
1+3110020intermittent6:00
1+3120020intermittent8:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD ILFOTEC LC29 6 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+195020intermittent5:00
1+295020intermittent5:30
1+1910020intermittent6:00
1+2910020intermittent7:30
1+1920020intermittent8:00
1+2920020intermittent10:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD MICROPHEN 6 · EI 100, 200
DilutionEI°CAgitationTime
1+110020intermittent10:00
1+310020intermittent14:00
stock10020intermittent6:30
1+120020intermittent14:00
1+320020intermittent20:00
stock20020intermittent8:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

ILFORD PERCEPTOL 6 · EI 50, 100
DilutionEI°CAgitationTime
1+15020intermittent13:00
1+35020intermittent16:00
stock5020intermittent12:00
1+110020intermittent17:00
1+310020intermittent22:00
stock10020intermittent15:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Kodak D-76 8 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+15020intermittent9:30
1+35020intermittent14:00
stock5020intermittent7:00
1+110020intermittent12:00
1+310020intermittent22:00
stock10020intermittent9:00
1+120020intermittent14:00
stock20020intermittent11:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Kodak HC-110 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
B5020intermittent5:00
B10020intermittent6:00
B20020intermittent8:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Kodak T-Max 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
1+45020intermittent6:00
1+410020intermittent7:00
1+420020intermittent8:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Kodak T-Max RS 3 · EI 50, 100, 200
DilutionEI°CAgitationTime
stock5024machine dip and dunk5:00
stock10024machine dip and dunk6:00
stock20024machine dip and dunk8:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Kodak Xtol 5 · EI 50, 100, 200
DilutionEI°CAgitationTime
stock5020intermittent6:30
stock10020intermittent7:30
stock10024machine dip and dunk6:30
stock20020intermittent9:30
stock20024machine dip and dunk9:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Tetenal Ultrafin 4 · EI 100, 200
DilutionEI°CAgitationTime
1+1010020intermittent6:00
1+2010020intermittent9:30
1+1020020intermittent8:00
1+2020020intermittent11:30

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

Tetenal Ultrafin Plus 2 · EI 100, 200
DilutionEI°CAgitationTime
1+410020intermittent5:00
1+420020intermittent7:00

Source: HARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04)

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

Shop prices

  1. £11.49Analogue WonderlandUKIn stock
  2. £10.27Parallax PhotographicUKOut of stock

Price history GBP per roll

Now
£11.49
Lowest
£11.49 26 Oct
Highest
£11.49 26 Oct
Change
0.0%
£10.00£11.00£12.00£13.0030 Sept7 Oct14 Oct21 Oct28 Oct

Lowest in-stock price

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-delta-100/prices?format=120&country=GB

Formats

  • 1200.11 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 DELTA 100 PROFESSIONAL Technical Information (2023-04)

On the shelf

  • 120single019498743399
  • 13536 exp.019498780622
  • 4x525 sheets019498743443
  • 8x1025 sheets019498743498

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 DELTA 100 PROFESSIONAL Technical Information (2023-04)

Sources

  1. DatasheetHARMAN technology DELTA 100 PROFESSIONAL Technical Information (2023-04) · 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-delta-100

Or ask an AI assistant through the MCP server: get_film("ilford-delta-100").