Stock photos provided by the manufacturers may not represent the actual item. Please verify this picture accurately reflects the product described by the title and description before you place your order.
Although Baader officially calls this a T-ring, this bayonet offers far more. The Baader Protective T-Ring allows Canon EOS cameras to attach to standard 2" eyepiece holders. It is optimized for full-frame sensor cameras (such as the Canon EOS 5D), but can be used with any EOS camera. Since it has a wider clear aperture than the restrictive T-ring (42 mm) size, it does not vignette the light cone of fast optics. Whereas it utilizes a 48 mm thread, it also includes a 48 mm to 42 mm adapter for using traditional T-thread accessories.
Baader has optimized the fit and tolerances between the camera bayonet and T-ring. This ensures that its connection to the EOS camera is wobble-free and has no lateral play, thus guaranteeing a stable image platform for long exposures.
One of the unique features of this “T-ring" is that it accepts internal filters (optional). Baader unmounted 50.4 mm or 50.8 mm and Baader low-profile 2" mounted filters can be installed internally.
*H-alpha filter preinstalled. Please note that using the H-alpha filter requires that the camera has been modified and its internal filter replaced with an expanded range filter. Modification is not needed for the Canon 20Da and 60Da cameras.