Canon EF Lens 用户手册
ENG-21
Specifications
The lens length is measured from the mount surface to the front end of the lens. Add 26.5 mm
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when including the lens cap and dust cap.
The size and weight listed are for the lens only, except as indicated.
The size and weight listed are for the lens only, except as indicated.
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The Close-up Lenses 250D and 500D cannot be attached.
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Aperture settings are specified on the camera.
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All data listed is measured according to Canon standards.
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Product specifications and appearance are subject to change without notice.
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EF300mm f/2.8L IS II USM
EF400mm f/2.8L IS II USM
Focal Length/Aperture
300mm f/2.8
400mm f/2.8
Lens Construction
12 groups, 16 elements
12 groups, 16 elements
Minimum Aperture
f/32
f/32
Angle of View
Diagonal: 8° 15’
Vertical: 4° 35’
Horizontal: 6° 50’
Diagonal: 6° 10’
Vertical: 3° 30’
Horizontal: 5° 10’
Min. Focusing Distance
2 m/6.6 ft.
2.7 m/8.9 ft.
Max. Magnification
0.18×
0.17×
Field of View
Approx. 136 × 205 mm/
5.4 × 8.1 inch (at 2 m/6.6 ft.)
Approx. 139 × 208 mm/
5.5 × 8.2 inch (at 2.7 m/8.9 ft.)
Filter
Any 52(WII)-series drop-in filter
Max. Diameter and Length
128 × 248 mm/5.0 × 9.8 inch
163 × 343 mm/6.4 × 13.5 inch
Weight
Approx. 2350 g/82.9 oz
Approx. 3850 g/135.8 oz
Hood
ET-120(WII)
ET-155(WII)
Lens Cap
E-145C
E-180D
Case
Lens case 300B
Lens case 400C