Super compact Exa Tessar with 12 aperture blades. Smooth mechanics, near perfect, clean glass. Joy to use, tested Sony A7 full frame: optimal.
*BONUS: Minimum Focusing Distance / macro hack applied: instead of reaching 0.55cm now you can get to 35cm. Procedure is reversible and without any impairment.
If you seek M42 Tessar please check: https://www.ebay.com/itm/325632500695
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