قراءة كتاب Premo Cameras, 1914
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Premo Film Pack Adapter.
The Premo Film Pack Adapter has the general size and appearance of a plate holder. But it has a hinged back which can be easily opened, the film pack dropped in place, back closed, and the adapter then loaded into the plate camera just as an ordinary plate holder is.
To make exposures, the slide is withdrawn, the "safety cover" pulled out and the film pack operated for successive exposures just as in film cameras.
Then at any time the slide may be reinserted, the adapter removed and the subject sharply focused on the ground glass by precisely the same method you would follow in using glass plates.
The Adapter is loaded just like a Plate Holder.
Thus a Premo plate camera will take films or plates with equal facility; it offers the daylight loading and other features of the Premo Film Pack, as well as every advantage of the ordinary focusing camera; and many of these Premos are as compact as purely film cameras.
With the Premo Film Pack Adapter, also, it is an easy matter to make multiple pictures (two or more exposures) on one film.
This is done by manipulating the slide in connection with the film pack tab, and the procedure is fully explained in the Premo manuals.
For prices on Premo Film Packs and Adapters, see page 44.
KODAK BALL BEARING SHUTTERS
This shutter works automatically and operates with remarkable smoothness and precision. The leaves are made in five segments, mounted entirely on ball bearings, and open and close in the form of a star, admitting a much greater amount of light in the same space of time than any other type of shutter. All except the No. 0 have variable indicated speeds of 1/25, 1/50 and 1/100 second, operate for bulb or time exposures, and are fitted with indicator for registering each exposure as made. The No. 0 is graduated for speeds of 1/25 and 1/50, has no registering device and operates with finger release only.
The Kodak Ball Bearing Shutter is supplied with the Premoette Jr. No. 1A, Film Premo No. 1, Pocket Premo C and Premo No. 8; the No. 0 size with Premoette Jr. No. 1.
COMPOUND SHUTTER
The Compound Shutter is an automatic and setting shutter combined. Automatically, either time or bulb exposures may be made, while it may be set for speeds of from 1 to 1/150, 1/200 and 1/250 second, according to size of shutter. The shutter leaves are formed of segments opening in star shape, giving even illumination over the entire plate the instant the exposure is started, and it has an iris diaphragm. Case is made of aluminum, and accurate adjustments can be made with shutter in any position. It may be operated by either bulb or finger release.
The Compound Shutter is regularly supplied on the Premoette Jr. Specials Nos. 1 and 1A, Filmplate Premo Special and Six-Three Premo Cameras.
KODAK AUTOMATIC SHUTTER AND KODAK AUTOTIME SCALE
The Kodak Automatic Shutter is carefully adjusted for time, bulb and instantaneous exposures. It is also graduated for fractional parts of a second, and is unusually accurate.
This shutter is regularly fitted with the Kodak Autotime Scale and is supplied on the Filmplate and Premos Nos. 9 and 10. The Kodak Autotime Scale greatly reduces the liability of error in exposure, as it automatically indicates the proper time and stop opening for subjects under any condition of outdoor photography. It is exceedingly simple to use. The speed indicator is merely set at the point on the scale indicating the kind of light prevailing and the diaphragm indicator at the point indicating the character of the subject.
These scales are also supplied for the following shutters when fitted with double lenses only. They can be readily attached by any amateur. In ordering always designate by Style letter as below.
Style A. For use with Kodak Ball Bearing shutter. 2½ × 4¼ and 3¼ × 4¼.
Style AA. For use with Kodak Ball Bearing shutter, 3 × 5¼, 3¼ × 5½ and 4 × 5.
Style B. For use with F. P. K. Automatic, 2½ × 4¼ and 3¼ × 4¼, No. 1 S. V. Automatic, or No. 1 B. & L. S. V. Automatic shutters.
Style BB. For use with F. P. K. Automatic, 3¼ × 5½ and 4 × 5, No. 2 S. V. Automatic, or No. 2 B. & L. S. V. Automatic shutters.
Style C. For use with Kodak Automatic shutter, 3¼ × 4¼.
Style CC. For use with Kodak Automatic shutter, 3¼ × 5½ and 4 × 5.
Style D. For use with B. & L. Automatic and Century Automatic shutters, 3¼ × 4¼.
Style DD. For use with B. & L. Automatic and Century Automatic shutters, 3¼ × 5½ and 4 × 5.
Style DDD. For use with B. & L. Automatic shutter, 4¼ × 6½.
Style H. For use with No. 0 Compound shutter, 2½ × 4¼ and 3¼ × 4¼.
Style HH. For use with No. 1 Compound shutter, 3¼ × 5½ and 4 × 5.
Style HHH. For use with No. 2 Compound shutter, 4¼ × 6½ and 5 × 7.
PRICES.
| Any style up to H | $1.00 | |
| Styles H, HH and HHH | 1.50 |
PREMO JUNIOR CAMERAS
The very simplest camera for making pictures is a camera of the fixed focus type. Such cameras require no focusing or estimating of distances, and as they do not have to be opened, are always ready for immediate action.
The Premo Juniors are cameras of this kind and they are even easier in operation than the usual camera of this type, possessing, as they do, the remarkable simplicity of loading and operating provided by the Premo Film Pack.
To make a picture with one of these cameras is a matter of seconds only. The first step is to load the camera, and this is effected in any light by opening the back, dropping in Premo Film Pack and then closing the back.
Second, set the shutter for time or instantaneous exposure as required by the subject. This is accomplished by merely moving a lever up or down.
Then glance at the finder, which reflects the image on a reduced scale, just as it will appear in the finished picture, press a lever and the exposure is made. To change films for successive exposures, pull out successive film pack tabs as explained on page 4.
