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air-bubble contains air at the normal, sea-level pressure of 14 lb. per inch: when the plane climbs up into the thinner atmosphere of 10.000 or 20,000 foot altitudes, your innocent little air-bubble will expand almost explosively and rip a big section of the picture loose from the wall!
“Then you’ve got to consider the constructional problems of aircraft. Naturally, weight is at a premium, so you've got to conserve every fraction of an ounce in your picture and its mounting. Then you run up against the stresses that the wall must stand as the plane flies, and particularly as it lands and takes off. The engineers provide for these by making the wall more or less flexible, so that it flexes — expands and contracts — to adjust itself to these varying strains. Your picture must provide overlaps and what you hope will be invisible expansion joints for the same purpose.
“Then, too, the walls are usually of a peculiar, honeycomb-like porous structure, both to conserve weight and to provide accoustical insulation. You have quite a problem in attaching the moulding that frames your mural.
“Finally, you put your mural in place several weeks before the interior of the ship is finished. And with
DC5 in Flight
DC-4 Landing
streams of workmen going in and out of the ship from then on, installing cabin fittings, instruments, and a host of other things, you can expect one or two clumsy ones will usually manage to gouge a hole or two in your pet picture. Then you try and patch the thing up, working, as the ship is still in the plant, with daylight bulbs and clinging to your favorite rabbit's foot. Sure as shooting, when the ship is at last wheeled out into daylight for delivery, you'll find on looking at the picture by daylight, that you’ve still repairs to make in your repair-job!”
Agfa All The Way
Kronquist’s pictures are an outstanding example of Agfa all the way. His negatives, which are usually exposed in a 31/4x414 Speed Graphic or a 4x5 Crown View camera, are made on Agfa SSS Pan and Superpan Press cut film, while the prints — generally enlargements from 16x20 up — are made on Agfa Brovira and Cykora papers.
His camera technique is modern, but — “I’m photographically old-fasbioned in one respect,” be says. “I’m heartily in favor of the idea of standardizing on one really perfect negative material, and one equally per
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