LOMO Compact Automat, Operation Manual

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Press release knob 10 up to stop. Release the knob only after shutter responding.
6.2. Taking with a Flash Bulb
With slight depressing of the release knob, you can see in the viewfinder a red-color indicator at
the upper right corner simultaneously with the red-color indicator at the upper left corner. Its
luminescence is a witness of an exposure time longer than 1/30s.
In this case, in order to avoid somewhat blurred image on the film, it is necessary to ensure
steadiness of the camera, i.e. to carry out taking from a support, from a tripod or to apply a flash
bulb.
Camera design is rated for application of the flash bulb with cable less connection.
Operation mode of the camera with the flash bulb differs from automatic operation only in
determination of diaphragm value and input of this data into the camera mechanism. Shutter
speed of 1/60s is set automatically when diaphragm values from 2.8 to 16 are set. To determine
diaphragm value, divide the flash bulb guide number by an object distance value in meters. A result
obtained is the diaphragm value required for taking with the flash bulb.