The Russian Zenit Helios 40-2 85mm f/1.5 lens is now available for F-mount. In the past this manual focus lens could be used on Nikon cameras only with an M42 adapter. Here are the specifications:

Focal length: 85mm

Aperture: 1:1.5 (max) - 1:22 (min)

Field of view: 28°

Manual focus, not chipped

Focusing range: 0.8 to "∞"

Dimensions: 82 x 96mm

Weight: 800g/28oz

The US price should be around $550 (based on the price of the Canon and Pentax versions)

Head over to Flickr and Fredmiranda for some sample images taken with the Helios 40-2 85mm f/1.5 lens. Check also Photozone's review of the M42 version of this lens on a Pentax APS-C camera.