On Wed, Feb 14, 2001 at 07:25:20PM -0000, John Palmer wrote:
> Some info sources say that the lens cap works as the off-switch for
> the camera. Does anybody know how it does this? Is it some sort of
> electrical contact made by the original cap, which is a metal
> push-over jobbie? Can't see any circuits it might make or break. Or
> is it because it plunges the meter cell into darkness? Or something
> else?
The latter. The 35RD, like the 35RC, uses a CdS meter cell, whose resistance
increases as the light gets dimmer. In darkness, it reaches its highest
resistance; while not infinite, it's enough to keep the battery good.
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