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I'm a new Pentax DSLR user, having recently acquired a K50 - very pleased with it so far. Need a lot more experience, and at some stage will blow some money on a good macro lens - anyone any ideas on good sources of second-hand Pentax lenses (or Tamron etc., compatibles) - in the UK of course?
Just about to post a few pictures from a photo session with a few others last w/e, on a disused railway line in N London.
Ian