It was bought along with a 450D camera as the first lens. Before that, there was a Zenith, but not everything can be removed from the M42, adapters are needed. In general, at a price almost free of charge, I bought a whale. Photos are mediocre. It focuses well on sharpness, almost does not miss. But still soap-soap. Each photo needs to be processed - increase the sharpness by default, then we look. And this is all when shooting at aperture 8-11, and even with exposure compensation in the minus. I do not recommend buying such a lens specifically.
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