I don't believe their called interchangable because no "alternative" screens are available. (Except the S.) However _all_ of the ZX/MZ series are user removable, hence user interchangable. Nice feature for cleaning if nothing else.
Don > -----Original Message----- > From: William Robb [mailto:[EMAIL PROTECTED] > Sent: Wednesday, February 08, 2006 4:58 PM > To: pentax-discuss@pdml.net > Subject: Re: how to change focusing screen on a ZX-5n? > > > > ----- Original Message ----- > From: "Gaurav Aggarwal" > Subject: how to change focusing screen on a ZX-5n? > > > > Hi Guys, > > > > I wanted to use two manual focus lenses more effectively on my Pentax > > ZX-5n and ordered the split image focusing screen of ZX-M. It arrived > > today. > > > > Now how do I change it? I have changed the screen on my PZ-1 (I used > > a Beattie Intenscreen). That was very easy. Any instructions/tips for > > ZX-5? > > I didn't think the screen in the MZ-5 (same as ZX-5) was interchangable. > > William Robb > >