Ricoh R-ex 70z 
Chronology of the Ricoh brand
Manufactured in Chine from 2002 until 0.
Index of rarity in France : Rare (among non-specialized garage sales)
Sold listing on Ebay.com
Inventory number: 5709
See the complete technical specifications
The R-ex 70z as one of a small series including the 90z, 105z and 120z. When a film is loaded into this camera, it is all rolled out of the cassette on to the take up spool and then rolled back into the cassette as the photos are taken. The frame counter counts back to 1. If there is no film in the camera there is no number displayed on the LCD. It is possible to rewind the film at any point leaving a small length outside the cassette for future reload.
These features prevent the photos being ruined if the back is opened accidentally, prevent photos being taken with no film in the camera and allow changing of films. They are usually found on much more expensive cameras. It was also available with a date back.
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