12mm F2.8 Full Frame Fisheye – Samyang US
Amazon.com : Opteka .35x HD Super AF Wide Angle Fisheye Lens with Macro and Microfiber Cloth for Pentax K-S2, K-S1, K-1, K-500, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K20D,
8mm F3.5 HD Fisheye – Rokinon
Samyang Optics
SMC Pentax 17mm F4 Fish-Eye Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database
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Samyang 12mm f/2.8 ED AS NCS Fisheye Lens for Pentax K SY12M-P
Samyang 12mm T3.1 VDSLR Cine Fisheye Lens for Pentax K Mount - Mirrorless Lenses - ShaShinKi
NODAL NINJA Lens Ring for Samyang 8mm F3.5 (Nikon / Pentax) — PanoSociety
Ricoh updates Pentax 10-17mm F3.5-4.5 fisheye with new coatings and exterior: Digital Photography Review
Amazon.com : Opteka .35x HD2 Super Wide Angle Panoramic Macro Fisheye Lens for Pentax 645Z, 645D, K-S1, K-500, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D, K110D and K10D
Best Buy: Lensbaby 12mm Scout with Fisheye Lens for Pentax K, Samsung GX and Sigma DSLR Cameras LBSFEP
New Super Wide Hi Def Fisheye Lens for Pentax K-3 K-3 II M2 K-50 K-S1 | eBay
Pentax F 17-28mm lens - Wikipedia
SMC Pentax 17mm F4 Fish-Eye Reviews - K Prime Lenses - Pentax Lens Reviews & Lens Database
Rokinon 12mm f/2.8 ED AS IF NCS UMC Fisheye Lens for Pentax K Mount
Samyang MF 12mm F2,8 Fisheye Pentax K | walimex-online
Pentax HD DA 10-17mm f/3.5-4.5 ED Fisheye Lens 23130 | Ricoh Imaging Australia
Rokinon 8mm f/3.5 HD Fisheye Lens with Removable Hood HD8M-P B&H
Amazon.com : Super Hi Def 0.43x Fisheye Lens for Pentax K-3 K-3 II (for 18-135mm Lens) (62mm Compatible) : Electronics
File:Pentax K-1 with flat Fisheye (34927515900).jpg - Wikimedia Commons
Samyang 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Pentax K Mount - SlrHut.co.uk
Rokinon 8mm f/3.5 Fisheye Lens for Pentax K FE8M-P B&H Photo
Fisheye lens - Wikipedia
