INDEX
- Aberrations, lens, 47, 54
- Aberration, spherical, 47, 54
- Acetylene light, 284
- Advertising, use of aerial photography in, 392
- Aero 1 and Aero 2 filters, 241
- Airplane, as camera platform, 20
- types of, 24
- Air speed, 27, 308
- Alcohol, use of in plate drying, 275
- use of in print drying, 286
- Altimeter, 33, 174
- Altitudes of flight for photography, 61, 224
- Anastigmatic type of lens, 47
- Aperture, lens, 39, 44, 56, 57
- Archæological surveying, 413
- Astigmatism, 49, 50, 54
- Auxiliaries, camera, 163
- installation of, 214
- Bagley camera, 286, 314
- Balance, of camera, 96
- Balloons, 15, 16, 18
- Banking, 27, 324
- Batteries, storage, 150, 156
- Bay, camera, 120, 210
- Bellows, camera, 65, 95
- Biplane, 24
- Blast marks in front of guns, 363
- Bleaching out print to leave interpretation marks, 367
- Boat, flying, 25, 374
- Bowden wire, 103, 106, 108, 111, 114, 116, 118, 126, 129, 136, 163
- Brightness, range of, 221, 225
- Burchell photographic slide rule, 303, 339
- Camera, airplane, 39, 384
- automatic, 18, 43, 90, 116, 124, 125, 311
- B. M., 120, 203
- Bagley, 286, 314
- Brock automatic plate, 126
- C type, 43, 87, 103, 109
- classification of, 43
- deMaria, 86, 89, 103
- deRam, 82, 93, 121, 129, 157, 205, 214, 326
- E type, 43, 87, 103, 109
- elements of, 42
- film, see Film cameras
- Folmer automatic plate, 126
- hand held, 95, 321, 369
- Ica, 103
- Lamperti (Italian), 112, 211
- L. B., 120
- long focus, 103, 301, 324
- L type, 43, 82, 94, 102, 117, 162, 210
- M., 106, 203
- non-automatic, 43, 102
- Piserini and Mondini, 111
- semi-automatic, 43, 116, 149
- stereoscopic, 341
- Camouflage, filters for the detection of, 225, 243
- Ceiling of plane, 27, 130
- Channels, detection of by photography, 408
- Chemicals, photographic, 257
- Chlorhydrochinon developer, 261
- Chromatism, lateral, 49, 54
- City planning, use of aerial photography in, 396
- Clock-work for driving cameras, 149, 155
- Clouds, 224, 242
- Collimator, 66
- Color, coefficient or index of negative, 259
- Coma, 47, 48
- Communication, means of on plane, 296
- Compass, 33, 173
- Cone, camera lens, 42, 114
- Construction operations, aerial photographic records of, 396
- Contact, imperfect in printing, 279, 284 prints, 45, 279
- Contacts, electric, on plane, 163
- Contours by stereo aerial photography, 404
- Control, distance, of camera, 110, 163
- Controls, duplicate, 19, 25, 195, 209, 214
- Convergence point, 337
- Cord for adjusting shutter aperture, 82
- Core rack development, 271
- Contrast, in brightness on earth's surface, 221
- Counter, exposure, on magazine, 88
- on release, 164
- Covering power of lens, 44, 49, 50, 58
- Crabbing, 27, 308
- Cradles, camera, 195
- Cross wires, 23
- Curtain, auxiliary shutter, 80, 84, 106
- Cylinders, relation between vibration and number of, 185
- Dark slides, double, 87, 99
- Daylight, intensity of, 222
- Definition, lens, 44
- Density, of air, effect of on propeller, 154
- of photographic image, 228
- Developers, for plates and films, 257, 260
- for papers, 262
- Developing machines, film, 133, 273
- Development, core rack method of, 271
- DH-4 plane, 210, 217, 296
- photographic, 213
- DH-9 plane, 296
- Diaframs, to equalize illumination of plate, 78
- Dilution coefficient of developer, 258
- Dirigibles, 15, 16, 413
- Distortion, absent with between-the-lens shutter, 74
- barrel, 51
- due to camera tilting, 206, 286, 305, 315
- in aerial maps, 317
- lens, 39, 44, 51, 54, 56, 62
- pin-cushion, 51
- produced by film shrinkage, 237
- produced by focal plane shutter, 74
- produced by glass plate in front of film, 131
- with wide angle lenses, 63
- “Dodging” in printing, 279, 315
- Doors in plane for camera to work through, 214
- Drying of films, 267, 276
- Earth, appearance of from plane, 30
- Eastman apron film developing machine, 274
- twin reel film developing machine, 274
- Efficiency, propeller, 155
- English aerial photographic practice, 45, 46, 283, 291, 340
- EK filters, 241
- Electric, drive for cameras, 116, 119, 123, 145, 149
- Elevation possible to detect in stereoscopic views, 340
- Emulsions, photographic, characteristics of, 227
- Enlarging, 45, 279, 283
- camera, 283
- Enlarging versus contact printing, 59
- Exhaustion of developer, 259
- Exploration, use of aerial photography in, 401
- Exposure, data charts, 250
- Field, angular, of lens, 57, 302
- flatness of lens, 56
- Field laboratory, mobile, 268
- Film cameras, 43, 130, 134
- Film, celluloid, 130
- Filters, 15, 58, 106, 174, 224, 233, 239, 241, 243
- effects secured by use of, 241
- Filters, gelatin, 244
- Fixing bath, 262
- Flaps, auxiliary to shutter, 80, 84, 85, 98, 99, 101, 119
- to protect lens, 214
- Flash lights, 18, 386
- Flying boat, 374
- Focal length, relationship of lens characteristics to, 55, 57
- Focal plane, 50
- Focus, depth of, 44
- Focussing, automatic, 284
- Fog, atmospheric, 224
- French aerial photographic practice, 45, 46, 283
- Friction disc speed control, 136, 159, 160
- Fuselage, 21, 87
- shape and size depending on type of engine, 23
- Future of aerial photography, 383
- German aerial photographic practice, 63, 103, 209
- Glass, optical, used in lenses, 44
- Gloves, handling apparatus through, 41, 89
- Governor for camera speed, 159
- Graphite, use of to prevent static discharge, 134
- Gravity, action of in aerial cameras, 41, 112, 115, 119
- Ground speed, 27, 307
- indicator, 311
- Guide-books, illustration of, 15, 392
- Guides for inserting magazines, 41
- Gyroscope, 189
- Gyroscopically controlled instruments, 29, 174, 192, 312
- Gyroscopic erector, 188
- Hardener, acid, 262
- Hand operation of deRam camera, 121, 125, 129
- Haze, 15, 30, 223, 233, 239
- Head resistance and weight, equivalent, 156
- Heat, effect of on plate sensitiveness, 175, 232
- Heater, electric, in camera, 142, 174, 232
- Horizon, photography of to indicate
- Hurter and Driffield sensitometric curve, 227
- Illumination of field by lens, 50, 54, 56, 57
- Image of point source, size of, 49, 54, 56
- size of in relation to focal length, 59
- Incidence, angle of assumed by plane at high altitudes, 206
- Inclinometer, 33, 35, 171, 173
- Indicators, distance, 163, 295
- Inertia, 229, 257
- Installation, camera, 24, 208
- Instructions, operating, to be placed on apparatus, 42
- Instruments, airplane, 30
- Instrument board, 30
- photographing, 170
- Intensification of aerial negatives, 262
- Intensity of daylight, 222
- Interpretation of aerial photographs, 17, 40, 351
- Interval between exposures, 40, 158, 305, 307
- Isochromatic plates, 233
- Italian photographic practice, 122, 377
- Jamming of cameras in operation, 119, 120
- K1 and K2 filters, 239
- Keeping power of developer, 259
- Kites, 15, 16, 18
- Laboratory, mobile photographic, 269
- Landscape gardening, use of aerial photography in, 395
- Latitude of plates, 229
- Lens, 42, 39, 44, 383
- Levels, spirit, on camera, 95
- Light, distribution of in aerial view, 221
- trail method of testing camera mountings, 183
- Loop, centrifugal force in, 29
- Machine gun ring as camera mount, 321
- Magazines, 87
- Magazine racks, 94
- installation of, 217
- Mapping, 64, 135, 185, 186, 304, 401
- Maps, mosaic, 17, 39, 64, 314
- sketch, 314
- Marking of negatives, 278
- Metol-hydrochinon developer, 261
- Mirrors for oblique photography, 324, 326
- Monoplane, 24
- Motions of camera, 179
- Motive power for aerial cameras, 145
- Mounting, camera, 102, 103, 179, 183 384
- Mounting, camera, turret, 312
- Movement, of film during exposure, 75, 142
- of image, permissible, 68
- Moving pictures from plane, 350
- Mud splashing on camera, 214
- Naval aerial photography, 368
- Negative lens sight, 168, 299, 305
- Night photography, 386
- Numbering devices in cameras, 169
- Oblique views, 39, 320
- Observer, function of in aerial photography, 291, 295, 304
- Oil spray from motor, 214
- Opacity, 228
- Opening for camera, 211
- Opposite directions, shutter to move alternately in, 76, 139
- Orthochromatic plates, 233
- Overlaps, for mapping, 307
- Panchromatic emulsions, 233
- Panoramic views, 321
- Parallax method of focussing, 65, 66
- Parallel, flying in, 308
- Photographic planes, special, 213
- Pilot, function of, in aerial photography, 291, 295
- Pinpoints, 39, 291
- Pistol grip for hand cameras, 95, 96
- Plate holders, 87
- Plates, bathed, 235
- Plumb line, behavior in banking plane, 28
- Ply-wood veneer construction, 23, 211
- Positype paper, 238
- Potassium carbonate for drying plates, 276
- Power required to drive cameras, 125
- Pressure, of shutter curtain, 131
- Printing, 279
- Prints, paper, 253
- development of, 286
- Prisms for oblique photography, 324, 326
- Propeller, characteristics, 152
- Pump, for producing suction on film, 132
- Punch marks on film, 144, 272
- Pyro developer, 261
- Racks, negative, 271
- Real estate, aerial mapping of, 393
- Rectifying, 286, 305
- camera, 314
- Reduction of aerial negatives, 262
- Release, shutter, 96, 99
- duplicate, for pilot, 164
- Release, shutter, time controlled, 124
- Relief, criterion for correct, 335, 344
- Resolving power of plates, 59, 235, 260
- Richard stereo printing frame, 283, 348
- Rinsing of plates, 259
- Rubber, sponge, use of in camera mountings, 195, 203
- Safe lights, photographic, 269
- Safety catch on camera mounting, 203
- device on camera driving mechanism, 162
- Salvaging of ships, aerial photography and, 399
- Seaplane, 25, 374
- Self screening plates, 245
- Semaphore signalling in plane, 297
- Semperfocal enlarging camera, 284
- Sensitized materials, requirements for, 225
- Sensitometry, 227
- of papers, 253
- Shadows, compass directions from, 356
- proper direction for, in examining prints, 352
- Shaft, flexible, 119, 123, 142, 161
- Sheaths, plate, 87, 88, 93, 126, 170
- Shrinkage, film, 237, 317
- Shutter, 42, 68
- Shutter, Folmer, 80
- Sights, 164, 166, 296, 301, 327
- Single-seaters, carrying cameras in, 114, 211
- Slide rule, photographic, 303, 339
- Solenoid, 151, 163
- Sound, not to be used for indication in plane, 164
- Spacing of pictures in film camera, 144
- Speaking tubes on plane, 296
- Speed, of development, 236, 267
- Spotting, 64, 125, 291
- Spring motors, 149, 155
- Springs, use of in aerial cameras, 41
- in magazines, 88
- Stabilized camera, 95, 187
- Static electric charges on film, 131, 133
- Stereo-comparator, 404
- Stereo-oblique views, 115, 321, 343
- Stereoscopes, 331
- Stereo printing, 283
- Stereoscopic cameras, 341, 344
- Stereoscopic photography, 329
- Stop-watch attached to shutter release, 310
- Strap, on hand camera, to go around observer's neck, 99
- Stream lines, 26
- lined hood, 214
- Suction for holding film flat, 131, 132, 142
- advantages of continuous and intermittent, 132
- Surveying by aerial photography, 401
- Tank development, 270
- Tearing edges of prints, 317
- Telephones on planes, 296
- Telephoto lens, 61
- Temperature, coefficient of development, 258
- Test chart, lens, 52
- Threshold value, 230
- Thrust, propeller, 152
- Timber, location of by aerial photography, 413
- Tone rendering, correct, 226, 230, 239
- Touch, sense of, not dependable in plane, 41, 125, 164
- Trailer, photographic truck and, 268
- Transmission of power to camera, 161
- Transparencies, 252, 330
- Transparency, 227
- Trays, camera, 195
- Tri-color ratio, 235
- Triplane, 24
- Tuning fork, used in shutter tester, 79
- Turbine, wind, for driving camera, 116, 127, 144, 147, 158
- Uniformity of curtain speed in focal plane shutter, 76, 82, 84, 86, 315
- Unit system of camera construction, 42
- Uprights, camera, in plane, 209
- Uses for aerial photography, 388
- Velocity constant, 258
- Veneer construction, 23, 209, 211
- Venturi tube, 132, 142, 144
- Vibration, 16, 18, 26, 40, 41, 58, 102, 179
- Volcanoes, photography of, 15, 399
- Water for mixing chemicals, 262
- Watkins factor, 258
- Weight and head resistance, equivalence, 156
- Wind, flying against, 68, 308
- motor, 146
- Windows in side of plane, 214, 328
- Wire, barbed, appearance of in aerial photograph, 360