It is especially well suited for use with digital EOS SLR cameras with a focal length conversion factor higher than 1.

Features Ultrawide high performance zoom lens offering excellent image quality Dustproof and moistureproof construction Rear focusing and ring USM for silence and highspeed AF 2 UD and 3 types of aspherical elements reducing chromatic aberration of magnification and providing superb image quality Nonrotating front element during focus Specifications Focal Length max.

aperture /span /p /td td classspecsdivider alignleft p span stylefontsize 10pt 1740mm 1 4 Filter Diameter 77mm Magnification with Extension Tube EF12 0.

83x 0.

32x Magnification with Extension Tube EF25 1.

02x 0.

70x Diagonal Angle of View 104 57 43.

2mm Horizontal Angle of View 93 49 36mm Lens construction 12 elements in 9 groups Minimum aperture f/22 No.

of aperture blades 7 circular aperture Closest focusing distance m 0.

28m Focus drive Ultrasonic Dimensions 83.

5mm dia.

x 96.

8mm Weight 475g Package content Canon EF 1740mm f/4.

0L USM Ultrawide wide lens /span /div /span /span /li /ul span stylefontsize 11pt color black fontfamily Arial Warranty 30 Day Warranty.

Warranty covers manufacturer s defects only.

This product is not covered by misuse of product or damage due to mishandling.