7. 9. 201117 tis. zhlédnutíLens: Ernst Leitz GmbH Wetzlar Summicron f = 5cm Nr 1023xxx (M39/LTM mount -- 1953?)This video shows the radioactivity from a Leica M39/LTM 50mm f/2 col...
22. 1. 201210 tis. zhlédnutíLens: Yashica Japan No.543xxx AUTO Yashinon-DX 1:1.4 f=50mm (M42 mount)This video shows the radioactivity from a Yashica 50mm f/1.4 camera lens, as measu...