This is the Summicron 50mm 3 cams.


















Here you can see the three cams.


















First, remove the three black screws















Now, lift the black shroud, better don't use the fingers, you could touch the lens by accident.
















If you put the focus ring to the minimal distance, it's easy to take it out.


















Unscrew the bayonet.



















And lift it.

















Search for the small steel ball and save it in secure place.















Now unscrew the two clear metal cams.


















Here all the removed items.














Put some grease at the hole where the small ball goes.















And the ball on top of its hole.

Now you can install the Leitax mount.
















And use again the original mount screws.


















Ready, the excellent Summicron on a modern digital camera.
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