Rangefinder focusing

Started 6 months ago | Discussions thread
LCT Senior Member • Posts: 1,210
Re: Rangefinder focusing

GF wrote:

David Kieltyka wrote:

The rangefinder focusing mechanism is purely opto-mechanical. No batteries needed, nor does it see "through the lens" (though the metering system does require you to remove the lens cap ).


Thanks Dave.

Interesting. How does the focusing system know I turn the distance ring?

Because the lens has a focus cam which translates a movement to the roller cam of the camera when you focus. Purely mechanical since the M3.

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