Page 129 - The Wellington photographic handbook

For rich brown tones 1 dram of this solution should be
added to each ounce of developer, and the normal exposure
increased by one-half. Development will take about 1 minute.
For very warm brown tones, two drams of Restrainer must
be added and the normal exposure increased from three to four
times. Development will take from 2 to 2| minutes.
As with the WELLINGTON Lantern Plate, when
ammonium bromide and ammonium carbonate are used as a
restrainer the appearance of the slide as it lies in the dish is likely
to prove misleading, and some method of timing should be adopted
to prevent under or over-development. If the worker adheres to the
times given above, namely 1 minute when 1 dram of Restrainer is
added, and from 2 to 2\ minutes when two are used (the temperature
of the developer being from 60° to 65° Fahr.), he will have little
difficulty. If the results are too dense or too thin it is a sign that
the exposure has been too long or too short as the case may be,
and another slide should be made. A slide that shows signs of
over-exposure may be saved by shortening the period of develop-
ment, and an under-exposed slide may be saved by prolonging
development, but in such cases the colour and gradation will be
altered, and the slide may prove poor in quality. Correct exposure
is a matter of judgment and experience, but, working by the above
method, the photographer can always be sure that his development
is correct. If the results are not what he desires he will know
that it is the exposure that is wrong and can act accordingly.
is, of course, quite possible to judge development in the
It
ordinary way. If the worker decides on the tone he desires and
suits his developer and exposure to that tone, a very little experience
will show him just what a correctly developed slide looks like as it
lies in the dish, and once this knowledge is obtained no slide need
be spoilt through over or under-development.
A warm-tone slide always gains in depth on drying and becomes
colder in colour. When taken from the fixing bath, a slide developed
to a very warm tone will present a somewhat washed-out appearance.
This, however, should not disturb the worker, as a gratifying

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