Once you are the owner of an Agfa Silette, your enjoyment of it should be complete. The few, simple points to be remembered for the use of this miniature camera are learned so quickly that the short time in which to study these directions carefully is not wasted. Take the camera without any film and put it through all its actions described in the text an illusra-

The 35 mm Silette is designed to take miniature cassettes monochrome as well as — of course — colour film (Agfacolor).

It is equipped with the excellent miniature anastigmat Agfa Apotar which has an aperture of f/3.5 and a focal length of 45mm. Pronto or Prontor-S shutters are available.

The Agfa Silette is fitted with a double and empty exposure locking device. This means that the same piece of film can never be exposed twice and further, that the film cannot be wound on by mistake before an exposure has been made. If therefore the release button cannot be pressed, the film must either be wound on using the rapid winding lever, or the latter had not been fully moved to its stop; a further complete turn will remedy this without the loss of film. If the rapid winding lever cannot be moved, the camera is ready for use.

THE SHUTTERS

Before each exposure is as a first step the desired exposure time should be set. The index number is brought opposite the black double marking (1/25 sec. in the illustration) by rotating the large milled ring (No. 9, fig. 2). The same index is used later for the distance setting.

Both shutters are synchronized for flash; the contact nipple for the flash unit cable is fitted on the bottom right-hand corner of the lens panel next to the shutter (No. 14, fig. 2).

Flash-bulbs as well as electronic flashes can be fired by this contact in such a way that they are triggered when the shutter is fully open. For flash-bulbs, the exposure time should invariably be 1/25 sec.; with electronic flashes, any, even the shortest exposure times, may be employed.

The Agfa Silette is fitted with an accessory shoe to accommodate all the commercially available flash-units.

STOP — EXPOSURE TIME — DEPTH-OF-F1ELD

The diaphragm stop is adjusted by rotating the diaphragm ring (No. 8, fig. 2) against a scale bearing the following stop numbers:

3.5

4

5.6

8

11

16.

Stop: Correct choice of the stop number requires some knowledge of its function. The light emitted from the object first strikes the diaphragm which admits to the film much light at full aperture, and a smaller amount when stopped down, but in any case only a fraction of the total light quantity. The above-mentioned numbers on the diaphragm scale are so graduated that beginning with the aperture f/4 each successive diaphragm stop (next higher number) reduces the photographically effective amount of light by half.

Exposure Time: The amount of light required for the film to reproduce a given subject is fixed. Exposure time and stop number are in a fixed

Depth-of-field: Similar to the exposure time, the range of sharp definition in front of, and behind the distance focused depends on the choice of the stop number. With a small stop (stopping down) this range of sharpness is considerably enlarged and is known as depth-of-field. Its extent increases further with the object distance.

Depth-of-field is therefore dependent on the degree of stopping down the lens and on the object distance. The exact ranges of sharpness determined

EMPTYING THE CAMERA
If the exposure counting device reads 36, 20, or 18 respectively according to the length of film loaded, only one more exposure can be made. If during loading too much empty film was wound up, it may be found that the last-but-one to the last exposure can no longer be wound on, i. e. the rapid winding lever is stopped halfways. In this case the last exposure cannot be made. After the last exposure the

The camera back may now be opened as described on page 7. The rewinding knob is completely pulled out, when the cassette can be taken out easily. It should be placed in a light-tight wrapping as quickly as possible and it is advisable to mark it "Exposed".

FOR THE AGFA CAMERA - AGFA FILTERS AND LENS HOOD
Filters are designed to reproduce correctly the brightness values of the different colours. We supply optically flat, homogeneously dyed filters to satisfy the highest demands. They are available in the densities yellow light, yellow medium, yellow-green, and red-orange.

Filter	light yellow	No.1	Exposure factor	1.5 - 2
	medium yellow	No.2		1.8 - 2.3
	lyellow-green	No.71		2 - 2.5
	red-orange	No.7		4

Ask your photo-dealer for Agfa Filters in their modern transparent screw-top cases, and the handy Agfa Lens Hood, which can also be used together with the filters.

Diameter of the Agfa Silette lens mount 30 mm.