| 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.[2] It originated as Hypersensitive Panchromatic plates in 1931. Since then it has 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 ISO/ASA emulsion was relabeled as 400 ISO/ASA with no change to the product. The 200 ISO/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 ISO/ASA.
On September 23, 2005 Ilford reintroduced its black-and-white single-use camera which includes 27 exposures of HP5 plus film.[3]
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