Overview
Canon’s breakthrough multi-layer diffractive optical lens technology provides photographers with superior super-telephoto performance in a smaller and lighter design with enhanced correction for chromatic aberrations. We’ve also added our highly effective Image Stabilization system that gives the equivalent effect of a shutter speed two stops faster. And, it’s built to our professional standards with fast AF, full-time mechanical focus and dust and water-resistant construction. - EF 400mm f/4 DO IS USM Super Telephoto
Features:
- The multi-layer diffractive optical element effectively corrects chromatic aberrations prone to occur in super telephoto lenses. It provides high image quality while maintaining compactness and light weight
- The image stabilizer gives the equivalent effect of a shutter speed two stops faster. The lens also has a second image stabilizer mode that is optimized for following shots of moving subjects
- Ultrasonic motor (USM) for quick and quiet autofocusing
- Manual focusing is available after the subject comes into focus in autofocus mode (ONE SHOT AF)
- The AF stop button for stopping the AF operation at anytime
- The lens is compatible with Extender EF1.4X II and EF2X II
- Tight seal structure ensures excellent dust-proof and drip-proof performance
- Designed for lighter weight with major parts made of magnesium alloy
Panel Features:
What's in the Box?
- Canon EF 400mm f/4 DO IS USM Lens
- E-145 Lens Cap
- Lens Dust Cap E (Rear)
- ET-120 Lens Hood
- Carrying Case 400B
- 52mm Drop-in Gelatin Filter Holder (Black)
- Wide Strap
- Tripod Collar
Sample Image
MTF Charts
Modulation Transfer Function or "MTF" is a measurement of the optical performance potential of a lens.
Image Stabilizer Settings
- Set the STABILIZER switch to ON
- Select the stabilizer mode: MODE 1: Corrects vibrations in all directions. It is mainly effective for shooting still subjects : MODE 2: It compensates for vertical camera shake during following shots in a horizontal direction and compensates for horizontal camera shake during following shots in a horizontal direction and compensates for horizontal camera shake during following shots in a vertical direction
- When you press the shutter button halfway , the image stabilizer will start operating
Tips on Using the Image Stabilizer
- n Semi-darkened areas such as indoors or outdoors at night
- In locations where flash photography is prohibited such as art museums and theater stages
- In situations where your footing is uncertain
- In situations where fast shutter settings cannot be used
- When panning subjects in motion
Setting the Lens
Specifications:
- Focal Length & Maximum Aperture................. 400mm 1:4
- Lens Construction...............................17 elements in 13 groups
- Diagonal Angle of View........................... 6° 10'
- Focus Adjustment..........................Inner focusing system with USM
- Closest Focusing Distance...................3.5m / 11.5 ft.
- Filter Size...............................................52mm Drop-In
- Max. Diameter x Length, Weight ................ 5.0" x 9.2", 4.3 lbs. / 128.0 x 232.7mm, 1940g