The Ilford range (or Ilford Harman, since the subsidiary producing films separated from the rest of Ilford in 2006 for failing to cease production of film, actually) of black and white movies splits, since 1935, in two &nbs; branches: FP (Fine Grain for panchromatic) and HP ( Hypersensitive panchromatic) - what should be added, more recently, the Delta range, using a somewhat different type of emulsion.
Each of these two lines had different generations, sensibilities increasing with the progress of chemistry. The HP, now represented by the HP5 +, As the name tends to indicate a greater sensitivity to the risk of having a larger grain, the FP range (and hence the FP4 +, its current incarnation) is contrary to the finest grain possible.
- type film reversal panchromatic black and white
- Manufacturer: Harman Ilford
- Type: FP4 +
- nominal Sensitivity: ISO 125/22 ° Format
- : Roller type 120 ( also available in 135 films and sheets of different formats)
- Dates of production: since 1990 (Replaces PF4, produced since 1968).
The classic film emulsion (cubic grains) Ilford share the wealth of gray scales and can possibly blame them for a lack of contrast: it is not the film for photo punch . I noted that at the time of my first roller PF4 in the 1980s, the transition to FP4 + is probably slightly corrected this.
added that the concept of contrast of a black and white film is something relative: for a given film can increase the contrast by pushing (ie in the sub-exhibitors and over-development) and reverse the decline in the holding . I would not be surprised that some unscrupulous labs dealing systematically FP4 + at 100ISO, ie by holding it slightly (it is equivalent to an under-exposure of 1 / 3 aperture).
Anyway: a film to recommend if you are looking for the subtle colors and rendering of volume rather than the power lines.
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