Canon EF 400mm f/4.0 DO IS USM
Features
The world's first multi-layer DO element for telephoto lens Small and light High image quality Image Stabilization for equivalent effect of a shutter speed of two stops faster Highly resistant against dust and moisture
Built to our professional standards with fast AF, full-time mechanical focus and dust and water-resistant construction
The EF 400mm f/4 DO IS USM is the worlds first super telephoto lens incorporating "Multi-Layer Diffractive Optical (DO) Element", for camera lenses, and is considered a major breakthrough. The outstanding feature, being its superb ability to correct chromatic aberrations. By incorporating this optical element in the optical design the EF 400mm f/4 IS USM is much smaller and lighter than a comparable lens having conventional optical elements. The Multi-Layer Diffractive Optical Element developed by Canon is a milestone optical element possessing the characteristics of both fluorite and aspherical elements, which has led to the production of high-performance camera lenses.
The world's first multi-layer DO element for telephoto lens Small and light High image quality Image Stabilization for equivalent effect of a shutter speed of two stops faster Highly resistant against dust and moisture
Built to our professional standards with fast AF, full-time mechanical focus and dust and water-resistant construction
The EF 400mm f/4 DO IS USM is the worlds first super telephoto lens incorporating "Multi-Layer Diffractive Optical (DO) Element", for camera lenses, and is considered a major breakthrough. The outstanding feature, being its superb ability to correct chromatic aberrations. By incorporating this optical element in the optical design the EF 400mm f/4 IS USM is much smaller and lighter than a comparable lens having conventional optical elements. The Multi-Layer Diffractive Optical Element developed by Canon is a milestone optical element possessing the characteristics of both fluorite and aspherical elements, which has led to the production of high-performance camera lenses.
Technical details
- Weight
- 1,94 kg
Performance
- Auto focus
- Y
- AF actuator
- DO IS USM
Lens system
- Lens structure (elements/groups)
- 17/13
- Fixed focal length
- 40 cm
- Closest focusing distance
- 3,5m
- Minimum aperture number
- 32
- Number of diaphragm blades
- 8
- Diagonal angle of view (max)
- 5°
Weight & dimensions
- Diameter
- 12,8 cm
- Filter size
- 5,2 cm
- Length
- 23,27 cm
Other features
- Magnification
- 0.12X
