ページを印刷するfilter holder in place of the red filter for full-area integrated
readings with colour analysers or enlarging exposure meters.
To fit the diffuser, push the red filter out of its seating in the
red filter holder, insert in its place the circular diffuser
supplied and fit the retaining spring. The diffuser now swings
into the light path for full-area meter reading.
Centering the lamp in the Durst M
670
BW
Before inserting a film, precisely center the opal lamp for even
illumination of the projected image on the baseboard. Proceed
as follows:
Switch on the enlarger lamp with the lens at full aperture
and without a negative. Check the projected area for shadows
or darker sections. If necessary centre the lamp by pushing
the lampholder (9) up or down or by turning it till all dark
spots disappear. Then secure the lamp holder (9) in the desired
position by screwing tight the milled screw (29).
Before adjusting the lamp check that you are using the
correct combination of lens, condenser and film masks or
glasses for the film size being enlarged.
Inserting film strips or single negatives
Dust and fingerprints on films show up disturbingly in
enlargements. So before enlarging clean any dirty negatives
with a sable or antistatic brush.
Remove fingerprints by gently wiping a fluffless cloth. Use a
film cleaning fluid for more persistent dirt. Insert only fully dry
negatives in the carrier. Take special care in cleaning so as
not to scratch the film's emulsion layer.
To insert single negatives fully pull the carrier out of the
enlarger head. Locate the single negative precisely over the
cutout to utilise the full image area. Then close the carrier
(which now holds the film securely in place) and push it into
the enlarger head.
9