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Specifications for the EF 400mm f/5.6L USM lens

77 mm / 3.0 inch Max. diameter and Length 90 x 256.5 mm / 3.5 x 10.1 inch Weight 1250 g / 44.1 oz Hood

EF400mm f/5.6L USM Marketed May 1993 Lens Construction (group) 6 Lens Construction (element) 7 No. of Diaphragm Blades 8 Minimum Aperture 32 Closest Focusing Distance (m) 3.5 Maximum Magnification (x) 0.11 Filter Diameter ( mm ) 77 Maximum Diameter x Length ( mm ) 90 x 256.5 Weight (g) 1,250

Setting the Focusing Distance Range on the EF 400mm f/5.6L USM lens

Switching the Focusing Distance Range Ranges 3.5 m/11.5 ft. - ∞ 8.5 m/27.9 ft. - ∞

Using Extenders (Sold Separately) with the EF 400mm f/5.6L USM lens

Extenders Diagonal 4° 25' 3° 5 ' Vertical

Using filters and the 500D Close-up Lens with the EF 400mm f/5.6L USM lens.

Close-up Lenses (Sold separately) EF400mm f / 5.6 L USM (77 mm ) 0.91x - 0.78x

EF 400mm f/5.6L USM Angle of View

EF 400mm f / 5.6 L USM Angle of View

Using the Infinity Compensation Mark on the EF 400mm f/5.6L USM lens

Using the Infinity Compensation Mark on the EF 400mm f / 5.6 L USM lens

Using Extension Tubes (Sold Separately) with the EF 400mm f/5.6L USM lens

You can attach extension tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below. Camera-to-Subject Distance ( mm ) Magnification Near Far Near Far EF12 II 2893 13449 0.16x 0.03x EF25 II 2460 6610 0.21x 0.07x