BrianS Posted October 13, 2020 Share #21 Posted October 13, 2020 Advertisement (gone after registration) You might check the flanges for the collapsible mechanism, that they are not bent and hold the lens in the proper place. I've had that problem on Collapsible Sonnars. Link to post Share on other sites More sharing options...
Advertisement Posted October 13, 2020 Posted October 13, 2020 Hi BrianS, Take a look here 50mm Summicron Collapsible backfocusing. I'm sure you'll find what you were looking for!
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