Takumar 50mm f1.4 is one of the very best vintage lenses. Here's a review of the four M42 versions.
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Super-Takumar 50mm f1.4. Is the famous 8 elements lens measurably better than the 7 elements lens?
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Takumar 55mm lenses. A guide to one of the best - and most eclectic - series of vintage M42 lenses.
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AVOID This FANTASTIC Vintage Lens - And Four You Should Buy!
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Six Vintage 50mm f1.4 Lenses - Tested and Compared!
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Pentax Super-Takumar 50mm f/1.4 (8-element version) Lens Review
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8 Element VS 7 Element - TAKUMAR 50mm F/1.4
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Vintage f1.4 Lenses For Mirrorless - Olympus Zuiko f1.4 and Pentax Takumar f1.4
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