Canon EF 400mm f4 DO IS USM
Canon EF 400mm f4 DO IS USM Specifications and Review
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| Model | Canon EF 400mm f4 DO IS USM |
| Link to Current Pricing | EF 400mm f4 DO IS USM |
Production Dates  |
2001 - current |
| Comments | The 400/4L DO was the first Canon lens to use Diffractive Optics. This makes the lens shorter and lighter than conventional optics. but can sometimes result in a "glow" around highlights in high contrast lighting. Very sharp though. Excellent travel telephoto. |
| Field of View
(degrees) Horizontal,Vertical, Diagonal Full Frame - 36x24mm APS-C - 22.5x15mm |
Full Frame : H - 5.2 : V - 3.4 : D - 6.2 APS-C : H - 3.2 : V - 2.1 : D - 3.9 |
| Full Frame FOV equivalent with lens on APS-C body |
640 mm (1.6x multiplier) |
| Full Frame FOV equivalent with lens on APS-H body |
520 mm (1.3x multiplier) |
| Image Stabilization |
up to 3 stops |
| IS Tripod Detection |
Automatic |
| Length | 233 mm (9.17 inches) |
| Weight | 1940 gm (65.6 oz.) |
| Maximum Diameter | 128 mm (5.04 inches) |
| Lens Mount Material |
Metal |
| Lens Color |
White |
| Filter Size | 52 mm (Rear Drop-in) |
| Filter Rotation |
Filter does not rotate |
| Focusing |
Internal Focusing (Length constant) |
| Focus Range Setting(s) |
Yes, has selectable focus range(s) |
| AF Stop Button |
Yes |
| Preset Focus |
Yes |
| AF motor |
USM |
| Distance Scale | Yes, has distance scale |
| Closest Focus | 3.5 m (11.48 ft) |
| Maximum Magnification | 0.12x |
| Canon TC compatibility |
Yes, Canon TCs can be used |
| Weathersealing |
Weathersealed |
| Lens Hood |
ET-120 |
| Tripod Mount |
Fixed Tripod Mount Ring |
| E-TTL II Support |
Yes |
| Elements/Groups |
17/13 |
| Special Glass Elements |
Yes, 1 Diffractive Optics (DO) element |
| Diaphragm Blades |
8 |
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