Vivitar 450/SLD

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The Vivitar 450/SLD is a Cosina-made M42 mount, 35mm SLR, marketed by Vivitar. It is likely based on the Hi-Lite 405.

It has a mechanical metal shutter with speeds from 1 to 1/1000 of a sec and a B mode. Film of 25 to 3200 ASA can be used.

Stop down metering is activated by pressing the shutter release halfway and adjusting settings until the needle at the viewfinder edge is centered in a small bracket. The viewfinder can be returned to maximum brightness by pressing the aperture re-open button on the front of the camera body.

The 450/SLD is distinguished from its contemporary the Vivitar 420/SL by offering a spot metering option, selectable using the collar under the film rewind crank.