Pentax MX User Manual

4. Composing and Focusing
While viewing through the finder, turn the focusing ring until your
subject comes into sharp focus and choose the most pleasing
composition,
5. Turn on Exposure Meter and Rotate Aperture Ring
Pull out the rapid-wind lever slightly (20°) and depress the shutter
release button halfway to turn on the exposure meter. The
preselected shutter speed plus the two adjacent speeds ( 60 and
"250" in the case of "125") are visible on the right-hand side of
the viewfinder, Trun the aperture ring until the central green LED
dot glows which indicates proper exposure. (The f-stop you have
selected is also visible in the small window above the focusing
screen). If the central green dot does not glow no matter how far
you turn the aperture ring, change the shutter speed.
6. Release Shutter
Hold your camera firmly and trip the shutter. Then cock the
rapid-wind lever for the next picture, (As long as the lever is at its
preadvance angle, the light meter stays ON. If you push it back to
the completely closed position, the meter is turned OFF.)
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Pentax MX Specifications

General

Film Format	35mm
Lens Mount	Pentax K mount
Exposure Modes	Manual
Focus	Manual
Camera Type	SLR
Shutter Speed	1 to 1/1000 second, plus B
Metering	Center-weighted