HP is a cubic-grain
black-and-white
Black-and-white (B&W or B/W) images combine black and white in a continuous spectrum, producing a range of shades of grey.
Media
The history of various visual media began with black and white, and as technology improved, altered to color. ...
film from
Ilford Photo
Harman Technology, trading as Ilford Photo, is a UK-based manufacturer of photographic materials known worldwide for its ILFORD branded black-and-white film, papers and chemicals. Historically it also published the '' Ilford Manual of Photograp ...
with a long history. 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.
References
External links
Ilford HP5 plus
Photographic films
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