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Kickstarter Campaign for new line of 617C/612C (Graflok adapter available), 45PS, 57PS and 810PS Cameras

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Just to add a data point. My Topcor 5.6/90 lens was spec'd with a 88.6mm flange distance. But I had to use the longer (+0.8mm) lens flange plus a 0.25mm shim. So roughly +1%.
 
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