Negative bayonet adapter allows easy connection of Canon/Nikon bayonet lenses to the T2 mount of ASI cameras.
The ASI T2 - Canon EOS Negative Bayonet Adapter II (fixed)consists of two parts: an EOS-T2 negative bayonet adapter and a 5mm T2 extension ring, making the backfocus not infinitely adjustable, but 12.5mm or 17.5mm.