A view finder is an apparatus in which can be seen a miniature representation of the picture that is thrown on the ground-glass screen of the camera. It is fixed outside the camera in such a position, that when the image is focussed sharply on the ground-glass screen, the finder shows the same image just as sharply focussed. When a finder is used, therefore, it is unnecessary to focus the picture on the screen, the finder being used instead, and the convenience of such a procedure is obvious. A finder is absolutely necessary with a hand camera, and a very valuable adjunct to a stand camera. Care should be taken to see that the finder includes no more of the view than is shown on the screen of the camera. If the finder includes too much, reduce it to the proper dimensions by pasting strips of dark-coloured paper on the screen of the finder.