Marion and Co., compiler · London : Marion and Co. · leaf 84
76 PRACTICAL GUIDE TO PHOTOGRAPHY. When we want to include a wide angle we must either use a larger plate or a lens of shorter focus than if we wish to include only a narrow angle. … It may be asked, Why not use at all times the wide- angle lens, and simply employ a smaller plate, if we do not wish to include all the angle which it will take in 1 The reason is this : — The surface of the glasses of a lens which has to include a very wide angle are so ground that even for a…
