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This product has a FreakScore of 7.3 out of 10 based on 47 scores.
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.
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