Baader Planetarium Digital T-Rings, System II (Sp54), DT54
The Baader Planetarium Digital T-2 System consists of a wide selection of compatible threaded couplers, that will permit you to convert practically any camera lens thread into a standard M42 x 0.75 T-2 thread (for use with accessories like the OPFA).
There are two series of adapters, the System I, and System II. System I components fit common smaller digital cameras, and are based on an M37 thread standard. System II components fit larger cameras and camcorders, and are based on a larger Sp54 thread standard. Though it may sound complex, the system is quite simple.
There are two parts required to adapt any camera;
First, you will need to select the specific Digital T-Ring, which has external threads that match the lens threading of your camera (see individual T-Ring listings, for cameras not specified contact your camera manufacturer or dealer to determine your camera's thread size). The Digital T-Ring will convert the camera threads to either an internal M37 (System I) or Sp54 (System II) thread.
Next, a Digital T-Adapter converts the M37 (System I) or Sp54 (System II) Digital T-ring thread to a standard internal T-2 thread, for attachment to any T-2 threaded accessory (ie, OPFA).
Note: Some cameras (ie, Casio, Nikon 5700) incorporate large threads that mount accessory lenses or add-on adapters to protect the zoom lens. These adapters often present standard threads that will work with one of our Digital T-Rings.
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