Fotodiox Lens Mount Adapter - Pentax K AF Mount (PKAF) DSLR Lens to Sony Alpha E-Mount Mirrorless Camera Body with Built-In Aperture Control Dial Mounts Pentax K AF Mount (PKAF) DSLR Lenses to Sony E-mount mirrorless cameras High-tolerance precision craftsmanship; infinity focus or beyond guaranteed All-metal design; hardened anodized aluminum construction Premium grade Fotodiox adapter 24-Month Fotodiox Warranty