Considering they've been fully merged since October of last year, not much. Well, no, I shouldn't say that - it drastically increased their operating and R&D budgets, with Hoya having a great deal more money to throw around than Pentax did.
I'm not quite sure what you mean by your post, Rex. One of the big points of Pentax cameras is having the most backwards compatible lense mount around.
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Digital: Canon 1DMkii, EF 17-40mm f/4 L, EF 50mm f/1.4, EF 85mm f/1.8
Film: Pentax LX, Pentax FA 50mm f/1.4, Pentax A 70-210 f/4, Pentax A 28mm f/2.8, Vivitar 2x Teleconverter, Vivitar 285HV
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