Adapt old Mamiya NC1000 / CS lenses to your modern EOS DSLR camera while retaining inifinity focus and aperture function.
Best Practices & Caveats
Follow these rules and you can safely use your CS glass on your modern EOS camera.
-When installing or removing the adapter the CS lens aperture ring must be in the f/16 setting.
-Install the adapter to the CS lens first, then seat the lens to your DSLR like any other Canon EF lens. This adapter works like the Mamiya NC1000 / CS P-mount for M42 Screw lenses.
-This adapter utlizes a FRICTION-FIT-ONLY. This means when focusing and adjusting aperture you must secure the lens barrel with one hand, using the other hand to rotate the rings to ensure the lens itself does not rotate and fall out.
-While installed Do not move the aperture ring to the "Auto" positon (the orange button). Doing so may result in damage to the lens.
-When not in use leave the lens in the f/16 position to relax tension on the lens mechanisms, or just remove the adapter entirely.
-Many have asked if this adapter will work with Mamiya ZE lenses. Sadly, it will not, without destructive modification to the ZE lens. So, long story short, although the Mamiya ZE flange is similar to the CS flange, this adapter is NOT compatible with unmodified ZE lenses.
The long story is that the ZE series has a totally different aperture mechanism which is a departure from the M42 style aperture function of the CS. With unmodified ZE lenses, there is mechanical interference between the ZE lens aperture lever and the EOS camera body. If the ZE aperture lever is removed, the ZE lens can be fitted to an EOS body, although at 90degrees off center, and with aperture function permanently lost (stuck at f/3.5). Best case, it wont fit -- Worst case, broken DSLR -- DONT TRY IT, or read this: http://bit.ly/1QH75gt
Here are the legal bits...
Absolutely no warranty or guarantee. User/Buyer assumes any and all liability. Use at your own risk.
See Also: Mamiya 35mm Forum -- CS/DSLR Adapter Thread