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.
Moving Objects. If people are passing the building to be photographed, it is advisable to use the smallest stop and give an accordingly long exposure. Persons passing, as long as they keep moving, will not obstruct the view nor will any blur be registered on the plate. If the exposure is a short one, the blur will be registered, but with a long exposure the difficulty is overcome. See Illustration No. 24. If there are crowds of people passing, it would be impossible with any length of exposure to overcome the blur, but with a few pedestrians the view is obstructed so little that the plate is not affected.
113. With an automatic shutter, during a long exposure you may close the shutter while persons are passing and open immediately after they have passed. As the shutter will not jar the camera there will be no vibration, so the shutter can be opened and closed as often as necessary.
Combination Pictures. There are times when the height of the building is so great that the distance in which a camera can be worked from the ground level is insufficient to take in the entire height. To overcome this it will be necessary to make the view from an elevated point, generally in an opposite building, from a third or fourth floor window. This, of course, raises the horizon line but is unavoidable.
Illustration No. 23.
Illustration No. 24 See Paragraph No. 112.
115. In large cities, where the streets are narrow and buildings are high, a front view of a building is frequently desired. Such a picture must be made in sections. In a case of this kind the camera must be operated from an opposite building as nearly one-third the total height of the building to be photographed as is possible. The camera must be perfectly level for the first exposure and the front board or rising front must be lowered to the extreme, taking in the base of the building and the walk below and as high up as the first plate will cover. If it is impossible to reach the street without tilting the camera downward, it will be necessary to bring the swing-back into play, tilting it backward until the ground-glass is perfectly perpendicular with the building. After the first exposure is made - without moving the tripod but raising the front board and perhaps, leveling the camera and adjusting the swing-back - take another section, making due allowance for sufficient lap to trim and square nicely. This time it will hardly be necessary to use the swing-back.
116. After the second exposure raise the front board or rising front sufficiently to admit of the third section, and, if necessary, make use of the swing-back to give perpendicular lines. If the third section does not take in all of the building, a fourth section can be made by raising the rising front and lens to its limit, and possibly tilting the camera may be necessary to admit the entire building into the view. The swing-back should be used carefully, as the ground-glass must be perpendicular with the building in every exposure, or distortion will result.
117. Negatives of the different sections can be squared and cut to match perfectly. All of these negatives may be placed in a large printing frame, permitting one solid print to be made from the combination. With a little dodging and spotting, lines that may show the joining can be removed. If platinum paper is used for printing, applying a little crayon, or using the air brush will enable one to work out any line visible in the print.