Справочник Пользователя для Ilford Multigrade 1762617 HAR1762617
Модели
HAR1762617
CONTRAST CONTROL
When changing contrast with an Aristo head fitted
with the Aristo W45 lamp + 40Y filtration, the
exposure has to be recalculated. This is because
the MULTIGRADE filters (and other manufacturers’
filters) are designed for use with tungsten enlarger
heads. The table gives the exposure factors for
MULTIGRADE IV RC DeLuxe paper. It can also be
used as a guide for other MULTIGRADE papers.
For example, if a print of correct density has been
made using filter 2 but it is decided that the
contrast of filter 3 is needed, multiply the exposure
given for filter 2 by 0.74.
with the Aristo W45 lamp + 40Y filtration, the
exposure has to be recalculated. This is because
the MULTIGRADE filters (and other manufacturers’
filters) are designed for use with tungsten enlarger
heads. The table gives the exposure factors for
MULTIGRADE IV RC DeLuxe paper. It can also be
used as a guide for other MULTIGRADE papers.
For example, if a print of correct density has been
made using filter 2 but it is decided that the
contrast of filter 3 is needed, multiply the exposure
given for filter 2 by 0.74.
Cold cathode (cold light) heads not designed for
variable contrast papers and pulsed xenon light
sources may give a reduced contrast range. The
MULTIGRADE 00 filter is particularly useful with
these light sources as it significantly extends the
contrast range available. Alternatively, some
additional yellow filtration, up to 70Y, may help.
The contrast range will depend on the spectral
characteristics of the light source used. The only
way to determine the contrast range available with
each model of enlarger is to carry out a practical
test.
variable contrast papers and pulsed xenon light
sources may give a reduced contrast range. The
MULTIGRADE 00 filter is particularly useful with
these light sources as it significantly extends the
contrast range available. Alternatively, some
additional yellow filtration, up to 70Y, may help.
The contrast range will depend on the spectral
characteristics of the light source used. The only
way to determine the contrast range available with
each model of enlarger is to carry out a practical
test.
DIFFUSER v CONDENSER ENLARGERS
MULTIGRADE papers are designed for use with
both diffuser and condenser enlargers. However,
because of the different types of illumination there
can be a contrast difference between the two
types. In practical terms with most negatives,
condenser enlargers give about an extra grade of
contrast compared with a diffuser enlarger. This
contrast difference, though, depends on the
amount of silver left in the negative. Thus there is
little change of contrast between the enlarger types
for very pale, flat negatives and also for the dye
image of ILFORD XP2 SUPER negatives.
MULTIGRADE papers are designed for use with
both diffuser and condenser enlargers. However,
because of the different types of illumination there
can be a contrast difference between the two
types. In practical terms with most negatives,
condenser enlargers give about an extra grade of
contrast compared with a diffuser enlarger. This
contrast difference, though, depends on the
amount of silver left in the negative. Thus there is
little change of contrast between the enlarger types
for very pale, flat negatives and also for the dye
image of ILFORD XP2 SUPER negatives.
A wide range of fact sheets is available which describe and
give guidance on using ILFORD products. Some products in
this fact sheetmight not be available in your country
give guidance on using ILFORD products. Some products in
this fact sheetmight not be available in your country
94055.GB.www
December 2001
ILFORD Imaging UK Limited, Town Lane, Mobberley,
Knutsford, Cheshire WA16 7JL, England
www.ilford.com
Knutsford, Cheshire WA16 7JL, England
www.ilford.com
MULTIGRADE filters
from 00
0
1/2
1
1
1/2
2
2
1/2
3
3
1/2
4
4
1/2
5
to
00
00
1.00
1.07
1.10
1.15
1.17
1.26
1.38
1.70
1.62
0.98
1.00
1.12
0
0.93
1.00
1.02
1.07
1.10
1.18
1.29
1.59
1.51
0.96
0.93
1.05
1/2
0.91
0.98
1.00
1.05
1.07
1.15
1.26
1.55
1.48
0.93
0.91
1.02
1
0.87
0.93
0.96
1.00
1.02
1.10
1.20
1.48
1.41
0.89
0.87
0.98
1
1/2
0.85
0.91
0.93
0.98
1.00
1.07
1.18
1.45
1.38
0.87
0.85
0.96
2
0.79
0.85
0.87
0.91
0.93
1.00
1.10
1.35
1.29
0.81
0.79
0.89
2
1/2
0.72
0.78
0.79
0.83
0.85
0.91
1.00
1.23
1.18
0.74
0.73
0.81
3
0.59
0.63
0.65
0.68
0.69
0.74
0.81
1.00
0.96
0.60
0.59
0.66
3
1/2
0.62
0.66
0.68
0.71
0.72
0.78
0.85
1.05
1.00
0.63
0.62
0.69
4
0.98
1.05
1.07
1.12
1.15
1.23
1.35
1.66
1.58
1.00
0.98
1.10
4
1/2
1.00
1.07
1.10
1.15
1.18
1.26
1.38
1.70
1.62
1.02
1.00
1.12
5
0.89
0.96
0.98
1.02
1.05
1.12
1.23
1.51
1.45
0.91
0.89
1.00
Exposure factors for an Aristo head
fitted with the Aristo W45 lamp + 40Y filter
fitted with the Aristo W45 lamp + 40Y filter
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