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Canon EF 400mm f/4 DO IS USM Lens Specifications and Measurements
| Specifications | Canon EF 400mm f/4 DO IS USM Lens | |
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| Year Introduced | 2001 | |
| Mounts On | Full-Frame, APS-C | |
| Lenses / Groups | 17/12 | |
| Angle of View: Diagonal | 6°10' | |
| Angle of View: Horizontal | 5°10' | |
| Angle of View: Vertical | 3°30' | |
| Aperture | ||
| Aperture Range - Wide / Long | f/4.0-32 | |
| Number of Aperture Blades | 8 | |
| Rounded Aperture? | ||
| Weight | ||
| Manufacturer Specification Weight | 68.5 oz (1940g) | |
| Actual Weight | 66.2 oz (1875g) | |
| Lens Hood Weight | 7.8 oz (220g) | |
| Tripod Ring Weight | 4.9 oz (139g) | |
| In-Use Weight | 78.9 oz (2234g) | |
| Size | ||
| Manufacturer Spec Size (DxL) | 5.04 x 9.13” (128 x 232mm) | |
| Measured Size (DxL) | 5.04 x 9.51” (128 x 241.5mm) | |
| Max Diameter at Tripod Ring | 5.1” (130.5mm) | |
| Max Length at Full Extension | 9.51” (241.5mm) | |
| Internal Focusing? / Extends with Focusing? | Y / N | |
| Lens Hood Size (DxL) | 6.3 x 5.61” (160.1 x 142.5mm) | |
| Lens Length with Hood (Min-Max) | ||
| Size of Rings: Focus / Zoom | 1.2” (30.5mm) | |
| Filter Size | DI 52mm UV ► CP ► | |
| Front Element (Filter Mount) Rotates | N | |
| Focus | ||
| AF Motor Type | Ring USM | |
| Full Time Manual Focus | Y | |
| Focus Ring Rotation | 119° | |
| Focus Limiter? / Focus Limiter Ranges | Y / |
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| Distance Scale? / Type | Y / Window | |
| Close Focus | ||
| Spec Min Focus Distance (Wide / Long) | 137.8” (3500mm) | |
| Tested Min Focus Distance (Wide / Long) | 130.83” (3323mm) | |
| Maximum Magnification | 0.12x | |
| Magnification Range with 12mm Ext Tube | 0.16-0.03x | |
| Magnification Range with 25mm Ext Tube | 0.2-0.07x | |
| Features | ||
| Tripod Ring Included? / Removable? | Y / Y | |
| Zoom Ring Lock Switch? | N | |
| Lens Hood Included / Model? | Y / ET-120 Buy ► | |
| Weather Sealed? / Filter Required? | Y / N | |
| Image Stabilization? / Stops? / Tripod Sensing? | Y / 2 / Y | |
| Extender Compatible? | Y | |
| Case Included? / Type? | Y / Lens Case 400B Buy ► | |
| 47.25" x 31.5" Subject Framing Distance | 400mm = 44.26' 23.62" x 15.75" Target: 560mm = 30.44' (w/ 1.4x) 800mm = 44.17' (w/ 2.0x) |
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| 1200mm x 800mm Subject Framing Distance | 400mm = 13491mm 600mm x 400mm Target: 560mm = 9278mm (w/ 1.4x) 800mm = 13464 (w/ 2.0x) |
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| Review | Canon EF 400mm f/4 DO IS USM Lens | |
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