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Sigma 15mm f/2.8 EX DG Diagonal Fisheye Lens for Pentax K 476109
Best Buy: Lensbaby 12mm Scout with Fisheye Lens for Pentax K, Samsung GX and Sigma DSLR Cameras LBSFEP
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SMC Pentax 17mm F4 Fish-Eye Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database
Ricoh updates Pentax 10-17mm F3.5-4.5 fisheye with new coatings and exterior: Digital Photography Review
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Pentax SMC P-DA Fish-Eye 10-17mm f/3.5-4.5 ED Lens Review | ePHOTOzine
Lensbaby 5.8mm f/3.5 Circular Fisheye Lens for Pentax K-Mount at KEH Camera
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8mm F3.5 HD Fisheye – Rokinon
Samyang 12mm F/2.8 ED AS NCS Fisheye Lens For Pentax K Mount Specifications | Neocamera
12mm F2.8 Full Frame Fisheye – Samyang US
