iece of paper or cardboard stuck on a knitting
needle, moving the latter so that it will not intercept the light too long
at one place.
In all these and similar instances which will occur to the reader, the
dodging should be done during the first part of the exposure. The
subsequent exposure seems to obliterate traces of such dodging better than
when it is done at the end of the exposure, just as in cloud-printing
better results are achieved by printing the sky first and the foreground
afterward.
It is quite possible to make bromide negatives in the camera. They have
their advantages in classes of work not requiring the finest definition,
are much lighter, cheaper, more easily stored and less liable to breakage
or other mishaps. They are best made on a thin, smooth paper, a _soft_
paper being better than the _hard_. They are placed in the plate-holder by
means of the ordinary cut film holder. The exposure required is
ascertained by a trial or two, but roughly speaking is about one-twentieth
that of a rapid plate. After development in the usual way--it being
carried only a little further than usual--and after fixing, washing and
drying, the paper negative can be spotted or retouched, after which it is
waxed.
CHAPTER IV
ENLARGING--DAYLIGHT METHODS
In taking up enlarging a full knowledge of what has been said as to the
manipulation of bromide paper will be necessary, as the principles
governing exposure apply here as in contact printing, errors being even
more serious, owing to the greater waste of material.
For the illuminant used in enlarging, we may employ either daylight or
artificial light. The former is cheap, but variable; the first cost of the
latter is quite a little sum, but the light is uniform. A daylight
enlarging apparatus can be made for a dollar or two, and hence is within
the reach of all; and if the process be given up, the loss is not serious.
If the cost is of little or no moment, very serviceable enlarging cameras
can be bought for about twenty-five dollars. Such a camera is adapted for
reducing as well as enlarging, and so will be found useful for lantern
slide making, copying, etc. As a matter of fact, few things are as useful
to the amateur as a good enlarging outfit.
We will first consider enlarging by daylight with home-made apparatus. For
this purpose a room with at least one window will be needed. It should
preferably be convenient to the dark-room. If the window of this
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