This DSLR Camera Adapter for Canon EOS cameras with its large 1.875" (47.6 mm) inside diameter bayonet minimizes vignetting on full frame sensors by eliminating the restrictive 1.5" (38 mm) diameter standard T-thread interface.
The adapter body is precision-machined aluminum and is anodized black. The bayonet is machined stainless steel, and both the body and the bayonet are baffled and painted flat black on the inside.
The ADATCCEOS will place the camera's sensor at the perfect 80.8 mm distance from the mating surface of CCD Field Flattener and Telecompressor Correctors.
The inside of the adapter has been threaded to accept standard 2" filter cells with 48 mm threads.
Warning: Be very careful if using filters with any of the TCC Telecompressor-Correctors, as they have very limited clearance to the back optical element. DO NOT stack multiple filters when using the Telecompressor Correctors!
Please note: this adapter can NOT be used with Canon manual-focus 35 mm cameras (series FD and earlier lenses).
This adapter has a net spacing distance of 1.45" (36.8 mm).
Refer to the following diagrams for additional information regarding spacing:
175 & 160 CCD Field Flattener Spacing Requirements
0.76x CCD Telecompressor Corrector Spacing Requirements