Just a short post about the Pentax 135 mm f/4 leaf shutter lens which I bought second hand for my 645D. One of the things I wanted to use this lens for is portraits: to get the eyes tack sharp (in focus, well lit with flash, using a short shutterspeed of 1/500s) and the tip of the nose as well as the ears already fading into blurriness. (Click photo for slightly larger version and check the tip of his nose!)
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