LEICA Films
LEICA FilmsLEICA Films
LEICA Films
Double-perforated 35 mm film, as used in the LEICA, is supplied by film manufacturers all
over the world in several packagings and a wide range of black-and-white and color
emulsions.
Daylight-loading
cassettes consist of a light-tight shell containing a length of
film for 36, 20 or sometimes fewer 24x36 mm negatives or transparencies
Daylight refills
(not available in USA) contain the same lengths of film wound onto a spool and protected
against light by a length of paper "leader". They are intended for loading into empty 35 mm
cassettes (or LEICA cassettes), after which they are handled exactly as daylight-loading
cassettes.
Bulk-loadings
of 35 mm film ore available in various lengths for darkroom
loading into light-tight daylight-loading cassettes or LEICA cassettes.
Color films
are either reversal-films, for positive color transparencies, or color-negative
films intended primarily for paper prints. Color reversal films are supplied either for daylight
or various types of artificial light-sources such as flash-bulbs or flood lamps. It is important
to note the type of color film before loading (setting the film-type indicator at the back of the
LEICA accordingly) and to follow the manufacturers instructions relating to exposure and
filtration as color films hove narrow exposure latitude.
Black-and-white films
of many types are available for the LEICA, but the most commonly
used b-&-w materials are negative films intended for producing positive enlargements.
These films may be divided into three brood classifications:
1 - Medium-speed films rated from
about 80 to 160 ASA are ideal all-
around materials for general-
purpose b-&-w photography. They
yield brilliant images, fine grain,
good resolution and a great amount
of exposure latitude. Their
negatives will yield excellent
enlargements.
2 - High-speed films rated at ASA
250 or higher are special-purpose
materials for "available-light"
photography under difficult
conditions which sacrifice fine grain
and resolving power to provided
increased film speed. Fine for such
things as night-scenes and dimly
lighted interiors, but not
recommended for general use in
daylight.
3 — Slow films, sometimes ca
"thin emulsion films" have ASA
speeds from about 20 to 64, yield
the ultimate in image sharpness
through a combination of high
resolving power, contour-
and extraordinarily fine grain. Ideal
for great enlargements, copying and
technical appli
whenever the ultimate reproduction
of fine detail is required.
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