Lantern slides, how to make and color them (1897)

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40 All experiments of this kind should be de- ferred until the reader is quite expert in making fair slides from good negatives. Like all good things, the contact method has its limitations. It is confined to the use of negatives with images of the proper size. As the largest opening in a standard lantern mat is 3 x 2j inches, the size of the image must conform to that. Frequently the image is too large, even when within these limits, and produces a very inartistic, crowded effect when projected upon a screen. The very oppo- site sometimes occurs, but the former is so omni- present that it is really a tremendous fault. Often the immense size of a certain object is toned down by the proportional dimensions of others near it. If there happen to be figures in the scene, they appear as mammoths. The author once saw upon a screen the image of a dog which measured 21 feet in length. This was followed by Niagara Falls, not quite 12 feet long and about 2 feet high, not half big enough to wet the dog. It is a common thing to see human faces appear 10 or 12 feet in circumference. The incongruity of such things is apparent, and can only be avoided by making negatives which are suitable for slide purposes, or by calling to our aid the camera method.