This is the Leitz Summicron 50mm ROM model.
	Here you can see the ROM contacts.
	First, unscrew the black shroud screws.
	And use the plastic tool to lift it.
	Now we can take it with the fingers.
	But the aperture lever nose doesn't allow to remove it.
	Let's unscrew the bayonet meanwhile..
	Now remove the bayonet.
	Look for the small ball and save it for now.
	Finally I realized that focusing to the shorter distance we can liberate the shroud..
	Now I replace the small bearing ball, and add some grease on it.
	And now we can install the Leitax bayonet, the red dot in front the scale center for Pentax, and slightly to the right for Nikon.
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