Pentax spent the year 2012 aggressively building out its lens lineup with glass designed for serious photographers. It unveiled its HD 560mm f/5.6 ED AW supertele, its generous 15X all-in-one 18–270mm, and its shockingly compact 40mm f/2.8 pancake. Then there is this 50mm f/1.8 DA SMC ($250, street), which seems more of a workaday tool than an exceptional instrument.
