Yes, the Samyang/Rokinon 135 f2.0 lens is in Pentax mount...: Pentax SLR Talk Forum: Digital Photography Review
Review: Samyang 2/135 ED UMC - phillipreeve.net
Samyang 135mm F2.0 ED UMC Pentax
Samyang 135mm f/2.0 ED UMC Lens Sample Images | Camera Times
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New Samyang 135mm f/2 ED lens released and reviews - PentaxForums.com
Samyang 135mm f/2 ED UMC Lens Review | ePHOTOzine
The Rokinon 135mm F/2 was Built for Astrophotography (Examples)
Samyang 135mm T2.2 ED UMC VDSLR Sony E European Reseller
Samyang 135mm f/2 ED UMC Review - DustinAbbott.net
Samyang Optics
Samyang 135mm F2.0 ED UMC Pentax - Samyang Lenses - Samyang - Our brands
Samyang 135mm F2.0 ED UMC Pentax - Samyang Lenses - Samyang - Our brands
Wide fields with Pentax K-1 Mark II and Samyang 135 (astro-tracer): Astrophotography Talk Forum Forum: Digital Photography Review
Samyang 135mm F2.0 ED UMC Pentax
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Samyang 135mm f/2.0 ED UMC Telephoto Lens for Pentax Digital SLR Cameras : Camera & Photo - Amazon.com
Samyang 135mm f/2 ED UMC Lens Review | ePHOTOzine
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Rokinon (Samyang) 135mm f/2 ED UMC Lens Review
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A Unique Portrait Lens, The Samyang 135mm f/2 For Sony A7 Series
