Mask bands
Mask tape is a term from photo technology within analog photography .
variants
Mask straps are part of:
- the negative stage of the enlarger in the photo laboratory , in which the developed film (negative or slide) is inserted for enlarging.
- the magnifying frame in which the photosensitive photo paper is placed for exposure.
In negative stages, adjustable masking tapes are used to determine the image details within a negative , in order to mask them and then enlarge them (and occasionally reduce them in larger formats). The edge areas of the negative that should not be enlarged are thus hidden in the later image.
With the enlarging frame, adjustable masking tapes cover the edge areas that are not to be exposed. This enables even, straight, white edges to be created on the sides of the image. This also keeps the photo paper flat at the same time.
Depending on the design, they are either used in pairs to delimit both the horizontal and vertical dimensions of an image. Or two horizontal (top and bottom) and two vertical (left and right) mask bands are used for all four sides of a planned image.
See also
literature
- Otto Croy: Enlarging with all the finesse . Heering-Verlag, Seebruck (am Chiemsee) 1962.
- Norbert Bolewski: The photo lab at home. Tips for establishment and practice , Verlag Knapp Wilhelm, 168 pages, 1990, ISBN 3-87420-136-8 .
- Julien Busselle: Enlarging black and white: special effects. Filter effects, toning, lith development, fine printing processes . Laterna Magica ( Callwey Verlag ), Munich 2000, ISBN 3-87467-768-0 .
- Reinhard Merz: The practical book black and white laboratory step by step from beginner to laboratory professional . Schwarzweiss-Magazin.de 2004, ISBN 3-9809801-0-3 .