Exposure Metering - Leica R9 Bedienungsanleitung

Pencil of rays for center-weighted and multiple-field metering

Exposure metering

In order to do justice to diverse lighting situati-
ons and reflection characteristics of subjects,
the LEICA R9 has exposure metering through the
lens, with three different metering methods: mul-
tiple field metering, center-weighted integral
metering and selective metering. The camera has
two different photo diodes for this TTL (Through
Pencil of rays for selective metering
The Lens) metering procedure: one circular
diode on the reflector behind the partially trans-
parent swinging mirror with a precisely defined
metering field and one diode with 5 metering
fields in the bottom of the camera, protected
from stray light. Depending on the desired
metering method, the metered values from these
six fields are evaluated.
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