Some more interesting comments from asahi man – first regarding the HD Pentax-D FA★ 50mm f/1.4 SDM AW lens and its cousin the Tokina Opera (he also provided the optical design of the new Pentax 50mm lens – 15 elements in 9 groups): Very special focus group Very heavy because of the new ultrasonic drive The goal of this … Continue reading HD PENTAX-D FA ★ 50mm f/1.4 SDM AW lens additional info (sharper than the Sigma Art version)