42
The VEGAREPRO kit consists
of
a copying film holder
(Order
code
SIRIOREP) and the COPYLAM 4 lighting system.
The SIRIOREP
(41)
takes film holders
for
6.5x9
cm
(2
1
12
x 31
/2
in.) sheet films. For further details see the
instructions with the Ourst SIRIOREP copying film holder.
IMPORTANT: When copying with the Ourst M 670 SW and
Ourst M 670 COLOR you focus and check the field of view
on the baseboard.
The UNIREPRO 670 kit consists of a camera arm
(42)
(Order
code NERIOCAM) and the COPYLAM 4 lighting system. With
this the Ourst M 670
SW
or
Ourst M 670 COLOR can serve as a
copying stand for a normal still camera. Remove the enlarger
head and attach the camera arm to the supporting stud
for
the enlarger head.
The COPYLAM 4 lighting system takes four reflector floodlamps
of 100
or
150 watts (Order code FLULAM 100
or
FLULAM 150).
Black·and-white enlargements
with
the Ourst M
670
BW
Follow this procedure
for
making a black-and-white enlarge-
ment with the Ourst M 670 SW:
(a) Place the negative in the negative carrier with the
emulsion side
down;
(b) Switch off the room light and switch on the enlarger lamp;
(c) Adjust the magnification and focus the image with the
lens at full aperture;
(d) Stop down the enlarger lens by two stops and swing the
red filter
(43)
into the light path;
(e) Insert the paper in the masking frame and
check
the image
location (the red filter protects normal black-and-white
enlarging papers);
(f) Switch off the enlarger lamp and swing the red filter out of
the way;
(g) Make a test exposure
to
establish the correct exposure
time. For instance make
an
exposure series
of
1,
2,
4,
8,
16 und
32
sec. with a Ourst test strip holder
or
a Ourst
multi-print masking frame;
(h) Process, rinse and dry the test strip. Select the
correct
exposure time from this test and set the exposure time
accordingly.
Note: You can also make black-and-white enlargements with
the Ourst M 670 COLOR by setting all filter dials
(44)
to zero.
The diffused light is equally suitable
for
black-and-white
enlargements; by using a more contrasty paper grade you
allow for the lower contrast
of
the M 670 COLOR lighting
system. This has certain advantages: The diffused light
suppresses the effect of dust and scratches and yields
enlargements of a greater tone range.
Note especially that diffused lighting does not affect image
sharpness. For sharpness depends exclusively on the quality
of the negative and of the enlarging lens.
Colour enlargements from
colour
negatives
or
transparencies
with
the Ourst M
670
COLOR
The procedure
for
making a colour enlargement starts with
a zero correction
print
involving the following steps:
(a) Place the film with the emulsion side down in the negative
carrier (emulsion side up
for
enlargements on Kodak
Ektaflex and Agfachrome Speed materials);
(b) Move all
filter
dials to zero;
(c) Switch off the room light and switch on the enlarger lamp;
(d) Select the enlarged image size and focus (with the lens
at full aperture);
(e) Stop down the enlarger lens by two stops (with high-speed
enlarging papers you may have to stop down by three
stops);
(f) Switch off the enlarger lamp;
(g) Establish a correct exposure time by a test exposure
using a series of times (for instance of
1,
2.
4,
8,
16
and
32
sec.) with a Ourst test strip holder
or
a Ourst multi-print
masking frame.
Process, rinse and dry the test strip. Then select the section
with the
correct
exposure time on the strip and set this
time
on
the exposure timer. If none
of
the test exposures
yields
an
image of correct density take the best result as the
starting point
for
a further exposure correction:
Exposure correction
with
colour
negatives
Print too light: Increase exposure time
Print too dark: Reduce exposure time.
Exposure correction
with
colour
transparencies
Print too light: Reduce exposure time
Print too dark: Increase exposure time.
Usually the test print will also show a
colour
cast.
43--~
12
