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Pentax Takumar (Bayonet) 135mm f2.5 Telephoto Prime Lens -Read-
Pentax lenses Preview: Three new zooms for the Pentax K mount - DXOMARK
Amazon.com : Pentax K-1 Mark II Full Frame 36MP Weather Resistant DSLR with 3.2" TFT LCD, Black with Pentax HD PENTAX-D FA85mmF1.4ED SDM Prime Telephoto Lens and D-BG6 Digital Camera Battery Grips (