Ilford HP

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HP5 plus
HP5plus-135-box-front.jpeg
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°
Type B&W
Introduced 1976
Discontinued 1989
Replaced by HP5 plus
HP4
Speed 400/27°
Type B&W
Introduced 1965
Discontinued 1989
Replaced by HP5
HPS
Speed 400/27°,
800/30° (1960)
Type B&W
Grain coarse
Introduced 1954
Discontinued 1998
Replaced by Delta 3200
HP3
Speed 125/22°,
200/24° (1952–53),
400/27° (1960)
Type B&W
Introduced 1941
Discontinued 1969
Replaced by HP4
HP2
Speed 200/24°
Type B&W
Introduced 1939
Replaced by HP3
HP
Speed 160/23°
Type B&W
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[edit]

  1. ^ "Ilford History and Chronology". Retrieved 2008-07-27. 
  2. ^ "BLACK AND WHITE MADE EASY" (Press release). Ilford Photo. 2005-09-23. Retrieved 2007-03-20. 

External links[edit]