Lens Specifications and Measurements
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| Specifications | Sigma 28-70mm f/2.8 EX DG Lens |  |
| Focal Length Range | 28-70mm | |
| Angle of View: Diagonal | ||
| Angle of View: Horizontal | ||
| Angle of View: Vertical | ||
| Lenses / Groups | ||
| Aperture | ||
| Aperture Range - Wide / Long | f/2.8-22 | |
| Number of Aperture Blades | ||
| Rounded Aperture? | ||
| Weight | ||
| Manufacturer Specification Weight | 18 oz | |
| Actual Weight | ||
| Lens Hood Weight | ||
| In-Use Weight | ||
| Size | ||
| Manufacturer Spec Size (DxL) | 2.91 x 3.43” | |
| Measured Size (DxL) | ||
| Max Length at Full Extension | ||
| Internal Zoom? / Extends with Zoom? | / Y | |
| Internal Focusing? / Extends with Focusing? | / | |
| Lens Hood Size (DxL) | ||
| Lens Length with Hood (Min / Max) | ||
| Size of Rings - Zoom / Focus | / | |
| Filter Size | ||
| Front Element (Filter Mount) Rotates | ||
| Features | ||
| Tripod Ring Included? / Removable? | N | |
| Zoom Ring Lock Switch? | ||
| Lens Hood Model / Included? | / Y | |
| Weather Sealed? / Filter Required? | N | |
| Image Stabilization? / Stops? / Tripod Sensing? | N | |
| Case Included? / Type? | / | |
| Focus | ||
| AF Motor Type | ||
| Full Time Manual Focus | ||
| Focus Limiter? / Focus Limiter Ranges | N | |
| Distance Info Provided to Camera? | ||
| Distance Scale? / Type | Y / Printed | |
| Metal Mount? | Y | |
| Extender Compatible? | N | |
| Close Focus | ||
| Specified Min Focus Distance | 13” | |
| Tested Min Focus Distance (Wide / Long) | ||
| Maximum Magnification (MM) | ||
| MM with 12mm Extension Tube | ||
| MM with 25mm Extension Tube | ||
| MM with 250D Closeup Lens | ||
| MM with 500D Closeup Lens | ||
| History | ||
| Year Introduced | ||
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Sigma 28-70mm f/2.8 EX DG Lens at B&H Photo
Sigma 28-70mm f/2.8 EX DG Lens at Adorama
Sigma 28-70mm f/2.8 EX DG Lens at Amazon.com
Sigma 28-70mm f/2.8 EX DG Lens at J&R
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