This ZWO adapter includes two parts (EOS to T2 adapter and 5mm T2 extender). It is suitable for all ASI cameras with a T2 (M42) female thread.
The 5mm extender increases the optical thickness of the adapter to 17.5mm and it is suitable for cameras such as ASI 174, ASI 294, ASI 183, ASI 1600, ASI 533 and ASI 2600.
Without the 5mm extender the optical thickness of the adapter is reduced to 12.5mm and it is suitable for cameras such as ASI 120, ASI 224, ASI 290, ASI 178 and ASI 385.
The adapter is the combination of 2 parts:
- The first has a female Canon bayonet adapter to a male M60 thread (optical thickness of 11.5mm)
- A female M60 thread to male M42 thread (optical thickness of 14.5mm) with internal M48 thread for filters.
- A M42 extension ring (female on one side, male on the other side) with an optical thickness of 5mm.
This adapter is suitable for Canon EOS EF lenses only.
To fine-tune the lens-sensor distance, the adapter include 4 round plastic shims with a thickness of 0.1mm, 0.2mm (x2) and 0.5mm.