The filter drawer was developed by ZWO for Canon EOS EF or EF-S lenses and cooled ASI cameras with 17.5 mm working distance. You can now use your EOS lens for astrophotography and use 2" filters for contrast enhancement or for L-RGB and narrow-band photography.

Features

• The drawer is compatible with all cooled ASI cameras with 17.5 mm flange focal length
• The drawer can also be combined with other astro cameras with 17.5 mm flange focal length or less. Shorter working distances must be compensated by the corresponding T2 extension.
• It is compatible with all 2" filters, including duo band filters, narrow band filters, IR cut filters, etc. The maximum height of the cell without the M48 thread must not exceed 5 mm.
• The requirements shown on the fifth image must be met while using 2" filters from third-party.
• One filter holder for 2" filters is included.
• The magnetic holder ensures a precise fit of the filters and easy changing.
• The thread of the connector is M42x0.75. You can also use the adapter M42F-M54M to connect the filter drawer to a full format camera.