They work just fine with the proper adapter, which Pentax and others make. http://home.earthlink.net/~my-pics/ebay/k42adapter.jpg
Shel > [Original Message] > From: Isaac > I saw the reply to my question about the use of Leica lenses. Do you have > the same problem with the M42 lenses as well? I notice they are quite > inexpensive these days and wouldn't mind adding a few if they would work > correctly.

