Kenko 2x Teleplus Pro 300 DGX for Canon EF Teleconverter which seems to be A

which seems to be A Thing with these lenses

The original Lensbaby is a simple lens on a squashable tube

Covers 4x5 without breaking a sweat

There's plenty of room for a pro camera and one of them long f2

Kenko 2x Teleplus Pro 300 DGX for Canon EF Teleconverter which seems to be AThe Kenko 2x Teleplus Pro 300 DGX is a modern, high quality teleconverter for Canon EF cameras and lenses. Compatible with many (but not all!) EF mount telephoto lenses: compatibility is broader than Canon's own teleconverters, but not universal. Kenko has some compatibility information here: https: kenkoglobal. com support teleplus . In excellent condition, with original box. General reminder: most DSLRs will only autofocus lenses with an f5. 6