Use a 2 inch filter with a ZWO camera and a Canon EOS lens with the ZWO New Filter Drawer for EOS Lens
ZWO filter Drawer for EOS Lens
The New filter Drawer for EOS Lens, with 26.5mm thickness is independently designed by ZWO and specifically made to match with ASI cooled cameras and EOS lens. You can freely use the 2" mounted filter with it.
It's compatible with all ASI Pro cooled cameras with 17.5mm back focus length (except ASI GT series).
It's also compatible with all ZWO and virtually all other brand 2" filters, including the duo-band filter, narrowband filter, IR-cut filter, etc.
With the ability of double strong magnets, it is more convenient and much easier to install or pull out the filter.
The thread of the interface is M42*0.75. You can also use the M54M-M42F adapter to connect the filter drawer to a full-frame camera.
Specifications
