The prisms - not porro - of lesser MZ models are made of mirrors, normal prism is solid glass. Porro is a different type of construction e.g. of mirrors or 2 more prisms. The only commercially successful SLRs that used porroprism finders were Olympus F series half-frame cameras. Also the accessory prism finder for Mamiyaflex 6x6 TLRs was of porroprism type. And, before somebody points it out, the very first SLR with a prism finder the Hungarian Gamma Duflex of 1949 had this type of finder. The eyepiece of the porro finder is not directly above the lens axis which gives lower profile. All the best! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho
-----Alkuperäinen viesti----- Lähettäjä: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Päivä: 26. heinäkuuta 2002 20:25 Aihe: Re: RE: Upgrading to auto focus >> From: Peter Alling <[EMAIL PROTECTED]> >> >> You might want the consider that the ZX-5n uses a pentaprism in it's >> viewfinder as opposed to the poro prism in the other ZX series cameras. > >What's the difference between a pentaprism and a poro prism? > >Andrew - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
