This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
Stained Glass Windows. Usually stained and figured glass windows in churches, residences, etc., are considered quite difficult subjects to photograph. They are generally composed of highly colored glass, ranging in tone from a deep blue to a rich red. The principal difficulty in photographing stained glass windows lies in the overcoming of halation.
Weather Conditions. Owing to the concentration of light on the window, a dull day should be selected for photographing, as this will not only assist in overcoming halation, but will also give more softness and evenness of tone.
Plates And Color Filters. While the use of non-halation ortho plates will assist materially in overcoming this halation, yet even with their use, unless the plate is properly exposed and specially developed, one will not produce the best of results. By means of the Special Development method given in Volume II, even with the ordinary plate good results may be secured. Of course, still better results may be obtained if a non-halation color sensitive plate be employed and developed by the special method above mentioned. A four-times screen used with these special plates will be found of value to those who are not skilled in their use. Many of the expert commercial workers use only the ordinary plate, and by means of proper exposure and special development produce results equal to those obtained when special plates are employed.
190. In Illustration No. 48 is presented a good example of this class of subjects. For complete data as to how this picture was made, see department, How Studies were Made.
Stopping Down Lens. It is not always necessary to stop the lens down to any great extent. In fact, if perfectly accurate focusing is done, f. 16 will be a sufficient stop to use in many cases, yet the smaller the aperture the less danger there is of halation; therefore, it is advisable to use at least two sizes smaller stop than is required in obtaining a good clear focus, and time accordingly, bearing in mind that when the ray filter or screen is used you will require from four to ten times the amount of exposure that would be necessary if the filter were not used. The amount
Photo by T. E. Dillon
Illustration No. 48
Stained Glass Window
See Paragraph 190
Photo by T. E. Dillon
Illustration No. 49
Statuary See Paragraph 192 of the increase in exposure depends entirely upon the density of the particular filter you are employing.
Statuary. In Illustrations No. 49 and No. 50 are shown two excellent examples of the reproducing of interior statuary. The three essential points to remember in this class of work are: First, the lighting; second, the exposure; and third, the development.