Fotasy Pro Pentax DA lens to Sony E-Mount Camera Mount Adapter (with aperture control) Solid metal mount lens adapter allows Pentax PK mount DA AF Lens to be used on Sony E Mount camera body. This adapter has an Aperture Control Ring, to control the lens aperture, this adapter fits Pentax DA AF & PK Mount lenses, as well as Samsung DA PK mount lens, & PK mount lens from other manufacturers. It also fit Pentax classic lens, such as Pentax M, FA, A F Lenses. Fits Sony NEX-3 NEX-3C NEX-5 NEX-5C NEX-5N NEX-5R NEX-6 NEX-7 NEX-F3 NEX-VG10 VG20 Brand: Fotasy