Ilford 1649651 Manual Do Utilizador

 

 
 
 
 
 

 

 

TECHNICAL INFORMATION 

 

 

 

 

ISO 125/22º BLACK AND WHITE PROFESSIONAL FILM

FOR HIGH PRINT QUALITY AND FLEXIBILITY IN USE

 

FP4 Plus has a speed rating of ISO 125/22º 

(125ASA, 22DIN, EI 125/22) to daylight. The ISO 

speed rating was measured using ILFORD ID-11 

developer at 20ºC/68ºF with intermittent agitation 

in a spiral tank.

 

ILFORD FP4 Plus is an exceptionally fine grain,

medium speed, black and white film. It is ideal for

high quality indoor and outdoor photography,

 

particularly when giant enlargements are to be

 

made. In addition to general photography, FP4

 

Plus is also suited to copying and internegative

 

work, and has many applications in scientific,

 

technical and industrial photography.

 

Best results are obtained at EI 125/22, but good

image quality will also be obtained at meter

 

settings from EI 50/18 to EI 200/24.

 

FP4 Plus is robust and will give usable results even

if it is overexposed by as much as six stops, or

 

underexposed by two stops. It is compatible with

 

all major processing systems, including those

 

which give the standard short fixing and washing

times.

 

 

FP4 Plus 35mm film is coated on 0.125mm/5-mil 

acetate base and is available in 24 or 36

It should be noted that the exposure index (EI)

range recommended for FP4 Plus is based on a

 

practical evaluation of film speed and is not based

on foot speed, as is the ISO standard.

 

exposure cassettes, or in bulk lengths of 17 and

30.5 metres (56 and 100ft). FP4 Plus 35mm film is

supplied in DX coded cassettes, suitable for all

 

35mm cameras.

 

 

FP4 Plus rollfilm is coated on 0.110mm/4-mil clear 

acetate base with an anti-halation backing which 

clears during development. It is available in 120 

and 220 lengths and is edge numbered 1 to 19 

(120) and 1 to 40 (220).

 

 

FP4 Plus sheet film is coated on 0.180mm/7-mil 

polyester base with an anti-halation backing which 

clears during development. It is available in a

 

wide range of standard sizes. The emulsion faces

 

the user when sheet film is held in the position

 

shown.

 

Sensitivity

 

Wavelength nm

FP4 Plus film may be used with all types of filters 

(eg colour, polarising and neutral density filters) in 

the usual way. Follow the instructions given by the 

filter manufacturer.

 

 

The exposure increase in  daylight  may  vary with

the angle of the sun and the time of day. In the

 

late afternoon or the winter months, when daylight

contains more red light, green and blue filters may

need slightly more exposure than usual.

 

Cameras with through-the-lens metering will usually

adjust the exposure automatically when using

 

filters. With some automatic exposure cameras, the

correction given for deep red and orange filters

 

can produce negatives under exposed by as much

as 1

1/2 

stops.

 

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