Asahi Pentax L-X User's Guide download pdf (Page 9)

Whenever time is limited and light is changing rapidly, you're sure to find

the automatic exposure control capabilities of the Pentax LX a useful and

welcome feature. Because the LX incorporates a direct off-the-film plane

light measurement system, readings are made continuously to,,ensure

uncanny accuracy even under the most difficult lighting conditions. For

macrophotography and portraiture where depth of-field control is

extremely critical, the aperture-preferred system of automation provides

the maximum in flexibility, ease of operation and convenience. The LX is

equally responsive, however, in fast action situations where by simply

opening the lens to its widest aperture, the camera automatically selects the

fastest possible shutter speed lighting will allow to capture those fleeting

moments.

To operate the Pentax LX in the automatic exposure control mode, first

rotate the shutter dial until the word "Automatic" locks in place opposite

the index mark. Set the lens f/stop you desire on the camera lens and

activate the metering system by pressing lightly on the shutter release

button. The LX will then read the amount of light striking the film plane,

select the precise shutter speed required for a proper exposure from the

continuously variable range of 1/2000th second down to 125 seconds

during normal temperatures. The approximate speed selected is indicated

on the viewfinder display. Speed selected by the camera can be changed

by merely selecting a different f/stop or by using the exposure

compensation dial (see page 24). To take the picture, press down firmly

and smoothly on the shutter release button.

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Asahi Pentax L-X User's Guide Page 9