Used ZWO T2 Thread to Canon EOS EF-Mount Lens Adapter for all ASI Cameras


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  • $39.95
  • Regular price $59.00

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Not Returnable Please note that used items are not returnable.

This is a T2 thread for a Canon EOS camera.  It is in perfect, like new condition.  It comes in its original box. 




The ZWO T2 Thread to Canon EOS EF-Mount Lens Adapter for ASI Cameras allows you to attach APS-C or smaller ZWO cameras to a Canon EF (full frame) lens. Please see the full compatibility list below to ensure this adapter is correct for your camera.


There are four Canon lens to ZWO camera adapters:


Compatibility with Canon Lenses:

This adapter is compatible with Canon EF (full frame DSLR) Canon lenses only. It is not compatible with EF-S (crop sensor DSLR) lenses or Canon mirrorless lenses.


Compatibility with ZWO Cameras:

This ZWO T2 adapter allows you to attach a Canon EF (full frame) EOS lens to most ZWO cameras (except full frame cameras including the ASI6200 series and the ASI2400). The filter drawer is designed to work at 17.5mm back focus to the sensor, so if you have a smaller format ZWO camera like the ASI533MC Pro or ASI294MC Pro, you will need to have the 11mm extension that came with the camera attached. It is also compatible with planetary cameras with 12.5mm back focus such as the ASI224MC, ASI462MC, and others with use of the included 5mm extension to reach 17.5mm.

It has a female EOS bayonet mount on the lens side and a male T/T2 (M42x0.75) thread on the camera side. This will connect directly to all ZWO cooled cameras with APS-C size or smaller cameras.


Compatibility with Filters:

This adapter is compatible with 2" filters, however, some users report that it is somewhat difficult to insert and remove the filter. For frequent filter changes, we recommend ZWO Filter Drawer for Canon EOS Lens # FD-EOS.



  • 67mm diameter
  • 26.5mm (thickness)
  • M42*0.75 male (external) thread (camera side)
  • M48*0.75 female (internal) thread (filter end)
  • Suitable for 2-inch astronomical filter


Please Note: It is common for the silver plate on one side of this adapter to have several light scuff marks right out of the box. These items are new as received from ZWO, and these marks are purely cosmetic.