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capsules"
A LENS of specific focal length used on an 8mm camera will cover only a quarter of the area covered by a lens of the same focal length used on a 16mm camera. By using a lens of half the focal length, the area is increased four times. Thus a y2" lens on an 8mm camera covers the same area as a 1" lens on a 16mm camera.
BY STANDING under the shade of a tree or in a doorway, the same purpose will usually be served as using a lens hood, depending, of course, on the direction of the sun.
AT 16 F.P.S. there are 40 frames per foot of 16mm film, lasting 2y2 seconds on the screen; and 80 frames of 8mm film lasting five seconds on the screen. At 24 f |p.s. a foot of 16mm film will last 1% seconds on the screen.
COINS CAN BE USED for weights on scales with sufficient accuracy for photographic purposes. The weight of each U.S. coin is as follows:
$1.00 412.5 grains
50c 192 grains
25c 96.4 grains
5c 77.1 grains
lc 48 grains
10c 38.5 grains
A LENS FOR A 16mm camera may be used on an 8mm camera if it can be mounted accurately at the right distance, i.e. the focal length of the lens, from the film plane. Thus, a standard 1" lens from a 16mm camera will be a 1" telephoto on an 8mm camera.
WHEN USING a wide angle lens on a turret camera, be sure the lens hood on any telephoto lens, which might be mounted on the turret, does not extend into the field of the wide angle lens, otherwise it will cut off a corner of the picture.
OVEREXPOSURE in color will make the grain more noticeable and thus affect the sharpness of the picture.
PRACTICE LOADING film into the camera in the dark. Threading the film is not easy in the dark; but the occasion may arise when this has to be done. The film may jam or lose a loop, and it ma ybe necessary to find a dark spot, such as the cupboard in a hotel room, to open the camera and adjust the film.
IN USING REDUCERS to lighten dark underexposed reversal film (or overexposed negative film) do not overdo it. If it is not reduced sufficiently the first time it can be done again; so, reduce gradually ■ — for safety.
• See CAPSULES on Page 40
5
Irs Easy; Irs Economical; Irs
T
LIP-SYNCHRONIZED
I
with the AURICON Cine-Voice Camera
• . . GAIN THESE SPECIAL ADVANTAGES WITH AURICON OPTICAL I6MM SOUND-ON FILM
Your optical sound-track is free! No extra cost per foot compared with silent film.
The "Cine -Voice" Camera puts the sound-track on the same film with your picture, and does all the work of lip-synchronizing sound and picture.
Run your sound-films immediately after regular picture processing, on any standard 16mm sound-on -film projector.
No expensive special processing or projection equipment needed.
It's simple! Just shoot a "Cine-Voice" Sound-track with your picture, process the film and project.
*
'MfVOICE" THE DM»W Vj*|
IttttUH" SEES!
THE CHILDREN
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MUSIC
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7375 BEVERLY BLVD., LOS ANGELES 36, CALIF.
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