Pentax 18981 Operation Manual - Page 69

Shooting Functions 69 About the AE-L (AE Lock) AE Lock is a function that memorizes the exposure prior to taking the picture. Use this when the subject is too small or backlit and a proper exposure setting cannot be obtained. 1 Press the AE lock button. The camera memorizes the exposure (brightness) at that instant. Press it again to disengage. 4 • @ is displayed in the viewfinder while the AE lock is engaged. • The exposure remains in memory for twice as much time as the metering timer after releasing the AE lock button. The exposure remains locked as long as the AE lock button is kept pressed or the shutter release button is kept pressed halfway. • You will hear a beep when the AE lock button is pressed. The beep can be turned off. (p.119) • AE lock is not available when the exposure mode is set to p (Bulb) mode. • When the exposure mode is set to e (program) mode, you can use a Hyper program while the AE lock is engaged. • The combination of shutter speed and aperture value changes depending on the zooming position even while the AE lock is engaged when using a zoom lens for which maximum aperture varies depending on the focal length. However, the exposure value does not vary, and therefore the picture is taken at the brightness level set by the AE lock. • The exposure value set when you press the AE lock button is saved when the exposure mode is set to a (Hyper manual exposure) mode. In this state, the shutter speed and aperture value combination is changed, with the exposure value said as is, when you change either the shutter speed or the aperture value.