I bought this lens with a black Canon P rangefinder. Adapted to Sony it's a really neat and small fast 50mm. This lens is full of character, so much so that the corners are pretty horrible, but it's superb for infrared (especially if you stay at f/8 or wider). Highly recommended, if you can afford it. This black version is hyper rare and so you'll probably be looking at the version with a silver ring at the front.

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