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Switching on the exposure meter
Turn the shutter speed setting dial to any value between 1/2000 s and 4 s. Press lightly on the shutter-release button [25] as far as the first pressure point or press the locking button on the selector switch [29]. When the LEICA R7's exposure meter is switched on, the LED display in the viewfinder lights up. If the shutter is cocked when you release the button you have used to activate the system, the LEDs continue to light for about 12s. If the shutter is not cocked, they extinguish at once.
Exposure metering at full aperture
Most LEICA R-Lenses feature an automatic spring-back diaphragm. This means that, when you take an exposure meter reading, a spring opens the diaphragm to full aperture regardless of the preset stop and then closes it again to the required aperture setting for the exposure. When using the following lenses, exposure metering takes place at working aperture:
•PC-SUPER-ANGULON-R f/2,8/28 mm,
•PA-CURTAGON-R f/4/35 mm,
•TELYT-R f/6,8/400 mm,
•TELYT-R f/6,8/560 mm und
•TELYT-S f/6,3/800 mm
