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Are Sigma auto focus 28-90 &100-300 from Pentax mz 60 slr combatible with latest Pentax DSLR? - latest is slr rate 2010

Yes, as Pentax) never do Pferdeturm last screw mount setting (the only major brand to do so. Everything that if the use of lenses that you mention is that the focal length increases by 50%, so it = 28-90mm (approximately) 42-135mm and 100-300mm the case will be to BE = (ca .) 150-450mm