(redirected from ef-)
Also found in: Dictionary, Thesaurus, Medical, Financial.

OFFICIO, EX. By virtue of one's office. Vide Ex officio; 3 Bl. Com. 447.

References in periodicals archive ?
3 L prime lenses for EF-mount cameras, in addition to the more than 60 lenses in Canon's EF and EF-S lens lines (which include macro, fisheye, telephoto, and tilt-shift models).
a leader in digital imaging, continues its advancement of EOS lens technology with the introduction of three new EF and EF-S lenses - EF 100mm f/2.
Consumers can also save up to $230 when buying the EOS 30D kit that includes the flexible EF-S 17-85 IS USM lens.
a leader in digital imaging solutions, is proud to introduce the new EF-S 55-250mm f/4-5.