EF 17-40mm F4L USM
- Ultra-wide high performance zoom lens offering excellent image quality
- Dust-proof and moisture-proof construction
- Rear focusing and ring USM for silence and high-speed AF
- 2 UD and 3 types of aspherical elements reducing chromatic aberration of magnification and providing superb image quality
- Non-rotating front element during focus
Optional Accessories
- Lens hood EW-83E
- Lens cap E-77U
- Lens case LP1319 (soft case)
- Dust cap E
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Focal Length & Max. Aperture:
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17-40mm 1:4
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Filter Diameter:
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77mm
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Magnification with Extension Tube EF12:
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0.83x - 0.32x
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Magnification with Extension Tube EF25:
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1.02x - 0.70x
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Diagonal Angle of View:
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104 - 57 (43.2mm)
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Horizontal Angle of View:
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93 - 49 (36mm)
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Lens construction:
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12 elements in 9 groups
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Minimum aperture:
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f/22
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No. of aperture blades:
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7 (circular aperture)
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Closest focusing distance (m):
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0.28m
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Focus drive:
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Ultrasonic
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Dimensions:
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83.5mm dia. x 96.8mm
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Weight:
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475g
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