Page 35 - The Wellington photographic handbook

The WELLINGTON Anti-Screen Plate.
The reader who has perused the notes on page 7 will need
little additional information regarding the Anti-Screen Plate.
It will have been seen from the foregoing remarks concerning the
Iso-Speedy Plate and the Wellington light filter that to obtain
any appreciable benefit from the use of an ordinary isochromatic
plate a light filter must be used, and the exposure increased from
two to five times, according to the depth of the filter employed.

The WELLINGTON Anti-Screen plate is an isochromatic
plate, but unlike isochromatic plates generally, it has the power of
giving an excellent rendering of the yellows and greens without the
use of a light filter.
It will therefore be seen that the Anti-Screen plate brings
the advantage of isochromatic photography within the reach of
the hand-camera worker, who can only rarely afford the long
It brings
exposure rendered necessary by the use of a light filter.
isochromatism also to the help of the portrait photographer and
allows of his securing portraits in which the hair and the texture
of the skin are rendered far better than would be possible with an
ordinary plate, his negatives in consequence requiring less re-
touching. What is even more important to the general worker is
the fact that with the Anti-Screen plate he is able to deal efficiently
with any subject that may present itself.
At the end of the day, when the light begins to grow yellow
and an ordinary plate becomes almost useless, the Anti-Screen
plate, by reason of its sensitiveness to yellow light, seems to gain
in speed, and thus becomes of increased value to the photographer
who desires to record the effects of light and shade which are so
charming to the eye in the early evening.

Finally, the peculiar character of its coating renders the Anti-
Screen plate almost free from halation even when used unbacked.

The Anti-Screen plate is developed in precisely the same way
as the Iso-Speedy plate.
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