Nikon 10-24mm f3.5-4.5G ED AF-S DX Nikkor  type_Measuring because that's basically the entirety

because that's basically the entirety of the feature set

Standard 1/4" thread up to for camera attachment

If you need a loupe- and you don't need a strap- this is a pretty solid choice: it's nice and sharp

Fits Pentax 67 and 67II cameras

but lets you run this camera off 4 AA batteries (included) rather than a pair of more expensive

Nikon 10-24mm f3.5-4.5G ED AF-S DX Nikkor &nbsptype_Measuring because that's basically the entiretyThe Nikon 10 24mm f3. 5 4. 5G ED AF S DX Nikkor is a nice, reasonably compact ultrawide lens for Nikon DX format DSLR cameras. Distortion is generally well controlled (though you can't really get away from it at these focal lengths) and the AF S focusing is quick. In excellent condition, with minor internal dust. Includes hood.