I am new to SLR photography. Two weeks ago I bought a new ZX-50 with 28-80 Pentax lense. I then bought a used Rokinon MF 80-200 lense at a local photography shop. The person at the photography shop was not familiar with the XZ-50 but said the lense would work. I read something in the pdml archives that led me to believe that this lense will not work with a XZ-50. Could someone please further enlighten me. I am hesitant to use it for fear it will harm the camera. My documentation says that the warranty on the camera is void if I use lenses other than Pentax.
Thanks to anyone willing to share advice.

