Canon EOS 1D Mark III White Paper - Page 23

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Also for Canon EOS 1D Mark III: Install Manual (2 pages), Product Manual (39 pages), Product Manual (36 pages), Additional Functions (6 pages)

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New EF 14 mm f/2.8L II

USM Lens

V. ACCESSORIES

The EF 14mm f/2.8L II USM is an ultra-wide-angle lens that was

developed as the successor to the EF 14mm f/2.8L USM. Since the

EF 14mm f/2.8L USM was first released in 1991, it has been widely

used as a high-performance ultra-wide-angle lens by both profes-

sional and high-end amateur photographers. At the same time,

there has been increasingly strong demand from the market for a

lens with improved image quality, particularly in peripheral areas. To

meet these demands, the EF 14mm f/2.8L II USM features completely

redesigned optics that offer not only significant improvements in

image quality, but features such as dust- and moisture-proofing,

resulting in a high-performance lens that exceeds even the stringent

requirements of professional users.

Optical Construction

Compared to the now-discontinued EF 14mm f/2.8L USM, the dimensions of the new

lens are: maximum diameter, 88.5mm (+5mm), overall length 111.6mm (+8.6mm), and

weight 645g (+85g). The minimum focusing distance is 0.2m and the maximum magnifi-

cation is 0.15x.

Extenders EF 1.4x II and EF 2x II, and Extension Tubes EF 12 II and EF 25 II cannot be used

with the lens. Also, the lens has no filter threads, so it cannot be used with the screw-in

250D, 500D, and 500 Close-up Lenses, as well as with Gelatin Filter Holders III and IV.

The lens comes with a new, secure, spring mechanism lens cap, Lens Cap 14.

Features:

• High-performance L-series lens capable of ultra-wide-angle shots with a diagonal

angle of up to 114°

• Uses 2 high-precision GMo aspherical lens elements (G3 is 40mm diameter aspherical

lens element) to provide excellent correction for curvature of field, distortion and other

aberrations, giving superb image quality over the entire image, and particularly in

peripheral areas, that far exceeds previous models

V. ACCESSORIES

Focusing Elements

Diaphragm

UD Lens

GMo Aspherical Lens

EF 14mm f/2.8L II USM