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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First Lesson in Development.
35
t will be seen tliat the image loses considerable vigor when
the chloride of silver has been fixed out, and nothing left
save the image and a thin film of transparent gelatine.
Another thing to be borne in mind, too, is this: the
resulting picture is to be viewed by transmitted light—that
is by light passing through it—not by reflected light, as
ordinary pictures, so that we cannot judge accurately of the
image as it appears to us while the plate is in the developer.
Atwell-fitted Development Sink
If we did so, and fixed the plate directly we saw an image
upon it, the result would be almost clear glass with barely a
trace of an image discernible on it. That is why we must
examine tlie plate by allowing light to pass through it.
When we have decided that the plate is sufficiently de-
veloped, we must rinse it under the tap for about a minute,
to free it of all adherent developer, and then place it film
upwards in the fixing bath.* The plate may be examined in
about five minutes, when the back (or glass side) will be
* If an ordinary tray be used. If the trough on page 30 is adopted the
plates may be placed film down without injury.