Technical Data Sheet

ManualsBrandsIlford ManualsFilmHP5 Plus Black and White Negative Film

Page 2 of 6 No

2018

P5 PLUS Technical Information

FILTER FACTORS

HP5 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 1½ stops.

MAKING LONG EXPOSURES

For exposures between ½ and 1/10 000 second, no

adjustments are needed for reciprocity law failure.

When exposures longer than ½ second are given, HP5

Plus, along with other films, needs to be given more

exposure than indicated by a meter. Use the graph to

calculate the increased exposure time which should be

given once the metered time is known.

The graph is based on the formulae Ta = Tm

1.31

Ta = Adjusted Time

Tm = Metered Time

CHOOSING THE BEST ILFORD DEVELOPER FOR THE JOB

Manual processing Spiral tank, dish/tray, deep tank Including rotary processors

Liquid Powde

Best overall image quality

EI 400/27, EI 800/30

EI 1600/33, EI 3200/36

ILFOTEC DD-X

ID-11 (stock)

MICROPHEN (stock)

Finest grain ILFOTEC DD-X PERCEPTOL (stock)

Maximum sharpness ILFOSOL 3 (1+9) ID-11 (1+3)

Maximum film speed

(EI 3200/36)

ILFOTEC DD-X MICROPHEN (stock)

Economy ILFOTEC LC29 (1+29) ID-11 (1+3)

MICROPHEN (1+3)

One

shot convenience ILFOSOL 3 (1+9)

ILFOTEC DD-X

ID-11 (1+1)

MICROPHEN (1+1)

Replenishable ILFOTEC HC ID-11

Machine Processing

Dip and dunk

ILFOTEC DD Best overall image quality (liquid) and long tank life

Short leader

ILFOTEC RT RAPID Rapid processing, best overall image quality and

long tank life.

Roller transport ILFOTEC RT RAPID Rapid processing