Canon's last screw-mount rangefinder — the 7sZ, built-in CdS meter, mechanical shutter, LTM, 1967.
The Canon 7sZ is a 35mm screw-mount rangefinder from 1967, a late revision of the Canon 7s and effectively the final body in Canon's rangefinder line. It is sometimes described as the 7s Type II, incorporating refinements over the 7s before Canon moved fully to SLR production.
It is a 35mm coupled-rangefinder camera for Leica Thread Mount (39mm screw) lenses, with a viewfinder offering selectable projected frame lines and a built-in CdS meter for exposure. The shutter is a mechanical metal focal-plane unit that operates without a battery; the meter is the only battery-dependent part of the camera.
As the last of Canon's LTM rangefinders it offers the same self-contained metered shooting as the 7s with minor improvements, suiting street and documentary photographers who want a metered screw-mount body compatible with a wide field of lenses. Its handling is that of a substantial, deliberate 1960s rangefinder.
Check the rangefinder patch for brightness and accurate vertical and horizontal alignment, and inspect the finder for haze around the frame lines. Verify the CdS meter reads and tracks changing light, allowing for an aged cell and the need for a modern battery substitute for the original mercury type. Cycle the metal shutter through all speeds checking for capping, and test advance and rewind.