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Photo Paper: VCB Style
PRESTIGE VAR. CB STYLE is a double weight,
variable contrast photographic paper with a warm black image tone. It
comes on a heavy ivory fiber-base stock of 300g per sqm and gives superb
results. Slightly matt surface.
PRESTIGE VAR. CB STYLE can produce contrast grades ranging from soft
to exceptionally hard due to an emulsion incorporating both blue and
green sensitivities. With a multicontrast filter set, contrast grades
from 0 to 5 are available in half-step increments.
HANDLING
A red safelight (such as one fitted with a Wratten 1A filter) is recommanded.
With a 15 watt bulb used direct illumination, minimum working distance
is 1,5 meters (5 feet). Safelight exposure longer than 2 minutes may
lead noticeable fog. It is a good idea to test for safelight fog time-to-time.
EXPOSURE
PRESTIGE VAR . CB STYLE can be exposed with any enlarger or printer
light source. As with all VC papers, be aware that some older types of
cold-light tubes may normally require more yellow filtration. Also, note
that exposure times depend upon which filter is in place. For exemple :
if 8 sec. is correct for filters number 0, 1 and 2 ; then filter
3 will require 9 sec. and filters 4 and 5 : 27 sec.
DEVELOPMENT
Process in any good paper developer at 20°C (68°F) for 1,5 to
2 min. with continuous agitation. BERGGER « Ecco » and
BER-98 developers works particulary well with this paper.
STOP BATH
An acid stop bath is optional but recommanded. It quickly stops development
by neutralizing alkali. This also helps extend fixer life. Dilution :
45 cc of 28% acetic acid in 1 litre of water. Treatment time : 15
sec. or 20 to 30 seconds if water rinse.
FIXING (maximum time : 10 minutes)
Treat in a conventional sodium thiosulfate fixer for a minimum of 5 min.
at 20°C (68°C). Normal fixer capacity is 1,5 sqm/litre. A two
bath fixing method (at 2,5 min. per bath) may be used to avoid under-fixing.
When the first bath is exhausted, replace it with the second bath and
mix a fresh bath « second bath ». With ammonium
thiosulfate (« rapid ») fixers, treat for 30 to
45 seconds only, then give a thorough pre-washed for 5 min. Next, treat
with a wash-aid (see « WASHING », below) with frequent
agitation for 10 min. before transfering to a final wash.
WASHING
The use of a wash aid (such as Kodak Hypo Clearing Agent) will reduce
your wash time and increase the efficiency of your washing. As well,
it will help guarantee the permanence of your photograph. Wash PRESTIGE
in running water at rate fast enough to completely change once every
5 minutes. Wash time is 1 hour at 20°C (68°F) or 30 min. if a
wash aid has been used.
DRYING
To effect even and rapid drying, you may use a weeting agent as a final
rinse. Excess water should be removed from the surface of prints with
a clean sponge or squeggee. Prints may then be dried in dust-free air
on drying screens or in a clean photo-blotter.
FINISHING
PRESTIGE VAR. CB STYLE may be toned, retouched, spotted and mounted using
normal methods.
QUANTITY |
SIZE (cm) |
25 Sheets |
24 x 30 |
25 Sheets |
30 x 40 |
25 Sheets |
40.6 x 50.8 |
25 Sheets |
50.8 x 60.9 |
25 Sheets |
1.08 x 10m Roll |
QUANTITY |
SIZE (in) |
25 Sheets |
8 x 10 |
25 Sheets |
11 x 14 |
25 Sheets |
16 x 20 |
25 Sheets |
20 x 24 |
25 Sheets |
1.27 x 10m Roll |
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