[jdub]

I read somewhere that it works--anyone w/ any experience on that possibility?

[aleonx3]

I like to hear that too. I have a Nikon AI lens that I want to check out the quality.

[alexeyga]

Make a search in the lens section... but as far as I remember, it wokrs, but you loose the infinity...

[Steve Beswick]

The registration distance of nikon f mount is almost exactly 1mm longer than the k mount. Infinity focus should not be a problem, it just won't be where infinity is normally. You could always pull the flange off the lens and add a 1mm shim, but at that point you might as well do a full k mount conversion.

[RioRico]

I asked about this last year (on the lens forum) and got detailed responses on how to do the necessary surgery. But I no longer hack hardware. I have (and will keep) two F-mount lenses, a Nikkor 85/2 and a Tokina 35-135, that I use successfully on my K20D and ZX-M. The lenses mount upside down, sort of press-fit onto the PK mount. Manual operation only, and I must take care not to shake them loose, but they're both excellent, and only cost US$9 each. Such a deal!