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Exposure metering at working aperture
Some lenses and accessories do not have an automatic spring back diaphragm or lack the linkage mechanism for it. In these cases, you have to obtain the
With lenses and accessories not equipped with automatic springback diaphragm, the modes A , A and m can be used.
The given measuring range of the LEICA R7 has a linear characteristic. If the light intensity level is below the minimum requirement, this characteristic is no longer guaranteed due to the insufficient photocell current. This can lead to incorrect measurements.
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