Ilford hp

HP5 plus
200px
Maker: Ilford Photo
Speed: 400/27°
Push: 3200/36°
Type: B&W print
Process: Gelatin-silver
Format: 35mm, 120, sheets, disposable camera
Application: General
Introduced: 1989
HP5
Speed: 400/27°
Introduced: 1976
Discontinued: 1989
Replaced by: HP5 plus
HP4
Speed: 400/27°
Introduced: 1965
Discontinued: 1989
Replaced by: HP5
HPS
Speed: 400/27°,
800/30° (1960)
Grain: coarse
Introduced: 1954
Discontinued: 1998
Replaced by: Delta 3200
HP3
Speed: 125/22°,
200/24° (1952–53),
400/27° (1960)
Introduced: 1941
Discontinued: 1969
Replaced by: HP4
HP2
Speed: 200/24°
Introduced: 1939
Replaced by: HP3
HP
Speed: 160/23°
Introduced: 1935
Discontinued: 1939
Replaced by: HP2

HP is a cubic-grain black-and-white film from Ilford Photo with a long history.[1] It originated as Hypersensitive Panchromatic plates in 1931. Since then it progressed through a number of versions, with HP5 plus (HP5+ for short) being the latest. The main competitor of Ilford HP5 Plus is Kodak Tri-X 400.

HP3 went through two speed changes in its history, but only one actual change to the emulsion. In 1960 the 200 ASA emulsion was relabelled to 400 ASA with no change to the product. The 200 ASA speed included an exposure safety margin, but with improvements in light meters this was deemed unnecessary. Thus the speed was revised up to 400 ASA.

On September 23, 2005 Ilford reintroduced their black-and-white single-use camera which includes 27 exposures of HP5 plus film.[2]

References

External links

  • Ilford HP5 plus


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