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A PREVENTIVE OF HALATION.
When a subject likely to give halation has to be
photographed, and a bacKed- plate is not available,
it will be found a complete preventive of halation
to clean the glass side of the plate and reverse it
in the slide, so that the glass, and not the Mm.
side is turned towards the lens. The negative will
be reversed right for left, -but can be printed tho
right way round by means of an enlarger, or by
the single transfer carbon process, if this reversal
is objected to. In many cases it is unimportant.
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