Quote:
Originally Posted by geolindon
it seems XCF = Xtra large Central Focusing and PCF = Porro prism Center Focusing (with the internal arm).
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I'm not sure that the "X" in "XCF" actually "means" anything in particular (although the "CF" bit does mean "Centre Focus".
According to official Pentax / Ricoh support:
http://support.us.ricoh-imaging.com/node/529
Not all PENTAX binocular models are designated by letters that define a specific acronym or meaning. Some letters are merely used to denote a specific model. However, the following are definitions of specific acronyms used by PENTAX for certain binoculars: These acronyms denote specific binocular types (or designs):
DCF - "Dache" Center Focus (Dache is roof in German) which denotes a Roof Prism binocular.
PCF - Porro-Prism Center Focus “ - this denotes a Porro-Prism binocular.
UCF - Uni-body Center Focus “ - this denotes an inverted Porro-Prism binocular; (this design is for compactness).
These acronyms denote attributes of a binocular:
WP - Water Proof
SP - Superior Performance
ED - Extra-low Dispersion (denotes glass type)
HRc - High-Resolution / center diopter adjustment