This may be our new 70-300 zoom: Pentax SLR Talk Forum: Digital Photography Review
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Sigma DG Macro 70-300mm F4-5.6 Lens Reviews - Sigma Lenses - Pentax Lens Review Database
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35-150mm F2-2.8 AF Full Frame Zoom Lens (Sony E) – Samyang US
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File:Pentax K-5 with Tamron 70-300mm Di LD Macro.jpg - Wikimedia Commons
HD PENTAX-DA FISH-EYE 10-17mm F3.5-4.5 ED diagonal fisheye zoom lens, ED glass is used to achieve high contrast, clear and sharp depiction, the shortest shooting distance of about 2.5 cm from the
Sigma APO DG Macro 70-300mm F4-5.6 Lens Reviews - Sigma Lenses - Pentax Lens Review Database
Tamron AF 70-300mm f/4-5.6 LD Di macro (Pentax K) - Review / Lab Test Report
