K&F Concept Lens Mount Adapter with Tripod for Konica AR Lens to Pentax Q-S1 Q10 Q7 Q DSLR Camera Camera Body Premium-grade K&F Concept adapter,High precision,Good quality. Smooth surface for effortless mount,Infinity focus allowed. Anodized aluminum construction. Compatible with:Pentax Q-S1 Q10 Q7 Q Please note: Infinity focus positionthe position of the infinity mark of the telephoto lens or super telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes.The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.