Table 12-1.–Filter Pack Adjustments for Subtractive Printing
If the color in
If possible,
excess is:
subtract these filters:
Yellow
Magenta and Cyan (or Blue)
Magenta
Cyan and Yellow (or Green)
Cyan
Yellow and Magenta (or Red)
Blue
Yellow
Green
Magenta
Red
Cyan
FILTER
FACTOR
FILTER
FACTOR
05Y
1.1
05B
1.1
10Y
1.1
10B
1.3
20Y
1.1
20B
1.6
30Y
1.1
30B
2.0
40Y
1.1
40B
2.4
50Y
1.1
50B
2.9
05M
1.2
05G
10M
1.3
10G
20M
1.5
20G
30M
1.7
30G
40M
1.9
40G
50M
2.1
50G
05C
10C
20C
30C
40C
50C
1.1
05R
1.2
10R
1.3
20R
1.4
30R
1.5
40R
1.6
50R
1.1
1.2
1.3
1.4
1.5
1.7
1.2
1.3
1.5
1.7
1.9
2.2
OR
Add these filters
Yellow
Magenta
Cyan
Magenta and Cyan (or Blue)
Cyan and Yellow (or Green)
Yellow and Magenta (or Red)
Table 12-2.–Exposure Factors for Kodak CC and CP Filters
change to the filter pack. Normally, cyan is not a
for any filter added. When two or more color filters are
consideration because it is set at zero in subtractive
changed from the filter pack, multiply the individual
printing, so neutral density is not created.
factors together and use the product.
With experience, exposure adjustments can be
estimated accurately when the test print is close to the
desired density and color balance. Table 12-2 provides
more detailed information on exposure compensations
when CC or CP filter changes are made.
Additive Printers or Enlargers
To use table 12-2, you must first divide the old
exposure time by the factor for any filter removed from
the pack Then multiply the resulting time by the factor
Additive printers operate completely opposite from
subtractive printers. Color correcting may get confusing
if you are operating both types of printers.
When making corrections to your filter pack on an
additive printer, you should make the corrections as you
12-9
