This lens is an EF 24 mm 1.4 L USM.
Lens construction: 11 elements in 9 groups
Diagonal angle of view: 84°
Focus adjustment: Rear focusing system with USM
Closest focusing distance: 0.25m / 0.8ft
Filter size: 77mm
Thanks to the floating construction, excellent corner-to-corner
delineation is obtained from 25 cm to infinity
Professional wide-angle lens with an ultra-large maximum aperture of f/1.4.
This is the first EF lens to employ both a replicated aspherical lens element to suppress distortion and spherical aberration, and a UD lens element to correct lateral chromatic aberration. Thanks to the floating construction, excellent comer-to-corner delineation is attained from 25 cm to infinity.
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The Societies of Photographers Convention and Trade Show at The Hilton London Metropole Hotel ...
You have 231 days until The Societies of Photographers Convention starting on Wednesday 11th January 2017