Program shift
The LEICA CM's variable programmed automatic exposure control mode combines the security and speed of fully automatic exposure
control with the freedom to adjust the speed/aperture combination selected by the camera to your own preferences at any time.
For example, to achieve sharp reproduction of an athlete in sports photography, you should set a fast shutter speed (the aperture is
thus opened further fi lower depth of field). If, on the other hand, you would rather have a large depth of field (smaller aperture = high-
er values) and accept the associated slower speeds that are necessary, then a slower shutter speed can be set (e.g. for landscape
photography). The overall exposure, i.e. the brightness of the image, remains unchanged.
To change the set speed/aperture combination, while continuing to hold down the shutter release button, turn the main control dial (18)
to the left (anticlockwise) for faster shutter speeds and larger apertures,
or
to the right (clockwise) for slower shutter speeds and smaller apertures.
Displays
In the data panel
In the viewfinder (in the digital display)
Continuing
Continues as for programmed automatic exposure control mode, except that in this case the display only
P
disappears when the shutter release button is released.
Notes:
• The available speed and aperture values limit the range of the program shift function, i.e. no combinations can be set, which re-
quire larger or smaller apertures than f/2.4 or 22 or faster shutter speeds than
• The program shift function is not available for close range flash exposures if the exposure cannot be controlled just by reducing
flash output (see also "Photography with and without flash", p. 90) so that the aperture setting is also automatically adjusted.
1
/
s for correct exposure.
1000
84