JJC Lens Adapter GA-1 for RICOH GW-4 Wide Conversion Lens on RICOH GR III camera - Replaces RIC. GA-1 Lens Adapter, 49mm filter compatible

JJC Metal Lens Filter Adapter Ring Compatible with RICOH GW-4 Wide Conversion Lens to GR III GR3 Camera, Replacement for RICOH GA-1 Lens Adapter

PHOLSY Lens Mount Adapter PK to L Compatible with Pentax K PK Mount Lens to Leica L Mount Camera Body Compatible with Leica SL2, SL2-S, CL, TL2, Lumix S5, S1, BS1H, SIGMA fp, fp L

K&F Concept PK to L Mount Adapter, Manual Focus Adapter Compatible with Pentax K Mount Lens to L Mount Camera Body

Fotga Pentax PK K Lens for Fujifilm X Mount Adapter Fuji X-Pro1 X-M1 E1 X-T2

K&F Concept PK to M4/3 Adapter, Lens Mount Adapter for Pentax K PK Lens to Micro 4/3 MFT Mount Olympus Panasonic Cameras

K&F Concept PK to FX Lens Mount Adapter, Compatible with Pentax K PK Mount Lens and Compatible with Fuji X Series Mount Mirrorless Cameras

Pentax 1.4X AW HD PENTAX-DA AF Rear Converter-black

Fotga Lens Adapter Converter for Pentax PK Mount Lens to M4/3 Micro Four Thirds MFT Mirrorless Cameras for Panasonic GH5 GH6 GF6 G100 GF10 GX9 GX85 Olympus OM-1 E-M10 III E-P7 - PL8/9

FOTGA PK-EOSR Lens Mount Adapter Ring for Pentax PK K Lens to R3 R5 R5C R6 Mark II R7 R8 R10 R50 R100 RP Camera, Compatible with Canon EOS R Mount Series Mirrorless Camera