Apart from not agreeing with you on a number of points ;-) the shutter speed
is not the switch itself. It is a machined piec of aluminium with square
milled on the inside. A sort of leaf spring forces a small ball bearing into
notches to proved the positive click-action. There are also gear teeth milled
which engage a gear wheel in the body, which must be where the shaft position
sensor/switch is located.
I suspect Olympus may have varied the stiffness of the leaf spring on the Tis.
Winsor Crosby wrote:
> mechanical linkages like the OM1? My OM4T ring is quite smooth, but it is
> after all, I think, just a switch for the electronically timed shutter.
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