Original RZ Pro 'AE Prism Finder'
http://www.leicashop.com/media/catal.../1/21732_2.jpg
Can not be used on RZ Pro II, unless modified.

RZ Pro II, 'AE Prism Finder II'
http://farm5.staticflickr.com/4051/4...0c5475d4_o.jpg
The Prism II will work on either original RZ Pro or Pro II bodies, no modification needed.

RZ Pro (only) 'PD Metering (non AE) Prism Finder'
http://www.iscanmanuals.com/ebay/jlb....5.09pic40.jpg
Will not work with Pro II RZ bodies, not modifiable for use with Pro II.

RZ/RB Non metering prism 'Model 2'
http://rb67.helluin.org/files/2010/02/dsc09963.jpg

RB (only) 'PD Metering (non AE) Prism Finder'
http://www.buyingkorea.net/ebay/EDE/RAK/IMG_5551.JPG
http://www.buyingkorea.net/ebay/EDE/RAK/IMG_5553.JPG

Sometimes there is nomenclature confusion between 'Prism Finder II' and 'Model 2' Prism finders.
Prism finder 'II' is an AE finder for RZ Pro and Pro II model cameras.
Model '2' Prism finders are non-metered and can be used on both RB and RZ.

Marc