C'est la version 1. Celle avec 8 éléments : Asahi Opt (PENTAX) Super TAKUMAR 50mm f1.4. Pour savoir quelle version on a :
The four versions (and there were only four, though the second version had some experimentation in multicoating) of the 1.4/50 Takumar are as follows:
Source :
http://www.forumlumix.com/t59828-takumar-asahi-50mm-1-41. Super Takumar - original optical formula (8 elements, no thorium), single-coated, 6 aperture blades (circa 1964 - rear element protrudes slightly)
2. Super Takumar - new optical formula (7 elements, thorium), single-coated (later copies may have experimental MC with 3-4 layers), 6 aperture blades (circa 1965 - later copies may have a white dot on the aperture ring at the f/2 position)
3. Super-Multi-Coated Takumar - optical formula identical to #2, multicoated (7 layers), 8 aperture blades (circa 1971)
4. SMC Takumar 50/1.4 - optical formula identical to #2, multicoated (7 layers), 8 aperture blades, rubber focusing ring (circa 1972) "
Je viens de découvrir ce week-end que mon père en avait un. Il a une version 3. Je pourrai comparer.