Venus Optics' 100mm F2.8 Ultra Macro lens is now available with Pentax K mount, new stepless EF mount version also available: Digital Photography Review
Pentax-D FA 100mm f/2.8 Macro WR Lens Review | ePHOTOzine
Ricoh Unveils a New 100mm f/2.8 Macro Lens for Pentax DSLRs | PetaPixel
SMC Pentax-A 100mm F2.8 Macro Reviews - A Prime Lenses - Pentax Lens Reviews & Lens Database
Pentax 100mm f/2.8 D FA WR Review
smc Pentax-F 100mm F/2.8 Macro | LENS-DB.COM
Pentax - M SMC 100mm F2 8 - YouTube
SMC Pentax DFA 100mm f/2.8 Macro WR on Sony A7R : ERPhotoReview
Pentax K-3 III and SMC Pentax-D FA 100mm F2.8 Macro WR - Compatibility | PentaxForums.com
Pentax-D FA 100mm f/2.8 Macro WR Lens Review | ePHOTOzine
SMC Pentax-FA 100mm F2.8 Macro Reviews - FA Prime Lenses - Pentax Lens Reviews & Lens Database
SMC Pentax-A 100mm F2.8 Reviews - A Prime Lenses - Pentax Lens Reviews & Lens Database
Pentax-D FA 100mm f/2.8 Macro WR Lens Review | ePHOTOzine
Pentax 100mm f/2.8 SMC D-FA WR Macro review | Digital Camera World