Справочник Пользователя для Ilford IL1833407 1833407
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1833407
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MULTIGRADE IV FB Fiber
ISO range figures may be helpful to printers who
have some means of measuring the effective
density range of the image as projected on the
enlarger baseboard – such as with a photometer.
As an example, for a negative with an effective
density range of 1.32 log exposure units, multiply
this figure by 100 and choose the nearest ISO
range figure from the table – in this case 130. Try
printing this negative with MULTIGRADE filter 1 on
MULTIGRADE IV FB Fiber paper.
have some means of measuring the effective
density range of the image as projected on the
enlarger baseboard – such as with a photometer.
As an example, for a negative with an effective
density range of 1.32 log exposure units, multiply
this figure by 100 and choose the nearest ISO
range figure from the table – in this case 130. Try
printing this negative with MULTIGRADE filter 1 on
MULTIGRADE IV FB Fiber paper.
ISO speed
The speed of MULTIGRADE IV FB Fiber depends
on the filtration used during exposure.
MULTIGRADE IV FB Fiber unfiltered, has a paper
speed of ISO P500.
The speed of MULTIGRADE IV FB Fiber depends
on the filtration used during exposure.
MULTIGRADE IV FB Fiber unfiltered, has a paper
speed of ISO P500.
ISO paper speed
MULTIGRADE IV FB Fiber paper and
MULTIGRADE filters
Filter 00
MULTIGRADE IV FB Fiber paper and
MULTIGRADE filters
Filter 00
0 1 2 3 4 5
Speed (P) 200 –––––––––––––– 200 100 100
The above values are representative of those
obtained when dish/tray processing the paper to
ILFORD recommendations.
obtained when dish/tray processing the paper to
ILFORD recommendations.
Exposing light sources
MULTIGRADE IV FB Fiber is designed for use with
most enlargers and printers, that is, those fitted
with either a tungsten or tungsten halogen light
source. It is also suitable for use with cold cathode
(cold light) light sources designed for variable
contrast papers. Other cold cathode (cold light)
and pulsed xenon light sources may give a
reduced contrast range.
MULTIGRADE IV FB Fiber is designed for use with
most enlargers and printers, that is, those fitted
with either a tungsten or tungsten halogen light
source. It is also suitable for use with cold cathode
(cold light) light sources designed for variable
contrast papers. Other cold cathode (cold light)
and pulsed xenon light sources may give a
reduced contrast range.
Contrast control
Contrast is controlled by using MULTIGRADE hand
filters, the new MULTIGRADE 600 equipment,
other MULTIGRADE equipment, variable contrast
enlarger heads or colour enlarger heads.
Contrast is controlled by using MULTIGRADE hand
filters, the new MULTIGRADE 600 equipment,
other MULTIGRADE equipment, variable contrast
enlarger heads or colour enlarger heads.
The twelve MULTIGRADE filters are numbered
00–5 in
00–5 in
1
/
2
steps, with the lowest filter number
corresponding to the softest contrast. The exposure
time for filters 00–3
time for filters 00–3
1
/
2
is the same; that for filters
4–5 is double.
The ILFORD MULTIGRADE 600 exposing system
replaces the standard lamphouse on most
professional enlargers.
replaces the standard lamphouse on most
professional enlargers.
Characteristic curves
Relative log exposure
Relative log exposure
MULTIGRADE IV FB Fiber glossy paper exposed
through filters 00, 0, 1, 2, 3, 4 and 5.
Developer: MULTIGRADE diluted 1+9.
Development: 2 minutes at 20ºC/68ºF.
through filters 00, 0, 1, 2, 3, 4 and 5.
Developer: MULTIGRADE diluted 1+9.
Development: 2 minutes at 20ºC/68ºF.
Density
Density