Early Work In Photography
A Text-book For Beginners
Forfatter: W. Ethelbert Henry C. E., H. Snowden Ward
År: 1900
Forlag: Dawbarn and Ward, Limited
Sted: London
Udgave: 2
Sider: 103
UDK: IB 77.02/05 Hen
Illustrated with an actual negative and positive, and numerous
explanatory diagrams throughout the text
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18
Early Work in Photography.
small batches (of half-a-dozen or so, if need be), until perfect
confidence is acquired. ,
By perfect confidence we mean confidence in the ability to
produce any number of prints from one subject of an equal
depth both of light action and of toning; in fact, so that
the prints shall be indistinguishable one from another
Then, and not until then, it will be time to learn to print
from an actual negative.
Probable Failures and their Cause.
An indistinct image, possessing no sharpness of detail.-
Probable cause, film side of negative put downwards instead
of up, thus interposing a transparent substance (the celluloid
upon which the negative image is made) between the actual
negative image and the sensitive paper. It is impossible to
secure sharp detail without actual contact between the ne-
gative film and the paper. . : : of
A blurred appearance, as if two images existed instead oi
one —Cause, carelessness in handling the printing frame
when examining the print, thus slightly moving the paper
from its original position and so securing a double impression
through the negative. 1:
Veiled, foggy appearance of prints.—Insufficient washing
before toning.:
Measles.—Too strong, or too alkaline, toning bath.