Rodenstock's supply of Copal shutters ran out in 2019 and Rodenstock has not produced a lens with a Copal shutter option since. During 2019, Rodenstock designed and manufactured a new Aperture-Only (AO) or Aperture-Stop mount and deliveries began in late 2019. 

• The AO mount is mechanical in operation. It does not require battery power, additional controller or cables to operate.
• AO lenses have a sturdy mount construction with a nine blade aperture design, providing an almost perfectly circular aperture opening. The nine blade design produces a smooth transition to out of focus areas.
• Dimensions of the new AO mount are identical to a Copal 0 shutter, and have the same spec for thread mounting. The AO mount can be a direct replacement for a Copal 0 shutter when needed. More information about Copal shutters can be found here: using-the-copal-shutter.html.
•  AO lenses are for cameras with focal plane shutters or digital backs with electronic internal shutters only.
• Use with digital backs with internal electronic shutters - PhaseOne IQ4 series, Hasselblad H6D & 907X.
• Use with mirrorless cameras - Hasselblad X1D & X1D II, Fuji X & GFX series, Sony A series, Leica S series, etc. when the mirrorless digital camera can be used as the capture device on a view camera or technical camera.
• To operate, rotate the aperture control ring until the desired f/stop lines up with the white index mark on the mount.
• Sold by ARCA-SWISS for use on view cameras using flat or recessed lens boards, or in R-Bayonet mount for use on R-Line technical cameras. Price list available on request.
• Rodenstock has issued a statement indicating they will offer remounting of Schneider lenses to the AO mount sometime in the future.
• We are currently remounting shuttered lenses to the Rodenstock AO mount. Lenses must be sent to ARCA-SWISS USA for the conversion in Germany by Rodenstock. Price and further details on request.

Manufacture of the Copal leaf shutter began in 1946, by the Copal Company in Japan. It was the standard mechanical shutter used by Rodenstock, Schneider, Fuji and Nikon for their large format lenses. The Copal Company ceased production in 2016, but supply remained available over the next few years.
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Today, a used lens with a Copal shutter is the most economical large format lens option available. Existing Copal shutters can still be reliable and durable when cared for in transport and operation. At this time, Copal shutters on large format lenses can be replaced with a shutter from another lens, or repaired in the USA at SK Grimes or other repair stations. If you need to replace a shutter, the aperture scales can be transferred to the new shutter or SK Grimes can make new aperture scales at an additional charge.

Rodenstock's supply of remaining Copal shutters ran out in 2019. Since then, Rodenstock has not produced a lens with a mechanical shutter option. During 2019, Rodenstock replaced the mechanical Copal shutter with a new Aperture-Only (AO) or Aperture-Stop mount. Phase One has the newer X-Shutter to which existing lenses can be remounted, but the control of the shutter currently works only with their IQ4 digital backs. Additionally, Arca-Swiss can now offer lenses mounted in X-Shutter.