Rodenstock 23 mm HR Aperture Only Lens RPS Stand & Accessories It has a rotating top

It has a rotating top plate with industry standard 3/8" thread for tripod heads and other accessories

The aperture ranges f/3

Reducer Ring 75mm for Universal Compendium Lenshade - 90mm (AC-324)

WRS brochure (English)

The Actus Mamiya RB/RZ Lensplate works with mirrorless as well as DSLR camera bodies for setting at infinity (and closer)

Rodenstock 23 mm HR Aperture Only Lens RPS Stand & Accessories It has a rotating topHR Digaron S 5. 6 23 NO RETURNS The Rodenstock HR Digaron S 5. 6 23 is available with Aperture Mount or Phase One X Shutter. The latter requires an IQ4 digital back to control the shutter and aperture. Specifications Image circle 70mm Filter thread E72 Fits into #0 lens boards Shutter speed range X Shutter 1 1000s 60 min comes with synchro cable for IQ4 digital backs Aperture range f 5. 6 22