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I am looking to buy a new 50mm lense, but I don't know exactly what to get... I want one for use in macro work too, and I am thinking about getting the Sigma 50mm f/2.8 macro.
But right now that is a bit out of my price range, I hear amazing things about the Pentax SMCP-M 50mm f2 (I have no idea if this is a macro lense) and I haven't heard much about the Pentax SMCP-A 50mm f/2.0 Lens (is this macro?)
And what is the difference between the M and A lenses? Would they be worth the $50 compared to the Sigma? AF isn't a big deal.