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Tamron 17-28mm f/2.8 Di III RXD Lens Compared to the Sigma 16-28mm F2.8 DG DN Contemporary Lens
| Specifications | Tamron 17-28mm f/2.8 Di III RXD Lens | Sigma 16-28mm F2.8 DG DN Contemporary Lens |
|---|---|---|
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| Year Introduced | 2019 | 2022 |
| Mounts On | Full-Frame | Full-Frame, APS-C |
| Lenses / Groups | 13/11 | 16/11 |
| Angle of View: Diagonal | 103° 41' - 75° 23' | 107.0° – 75.4° |
| Aperture | ||
| Aperture Range - Wide / Long | f/2.8-22 | f/2.8-22 |
| Number of Aperture Blades | 9 | 9 |
| Rounded Aperture? | Y | Y |
| Weight | ||
| Manufacturer Specification Weight | 14.8 oz (420g) | 15.9 oz (450g) |
| Actual Weight | 14.6 oz (415g) | 15.9 oz (451.3g) |
| Lens Hood Weight | 0.7 oz (20g) | 1.2 oz (33.6g) |
| In-Use Weight | 15.4 oz (435g) | 17.1 oz (484.9g) |
| Size | ||
| Manufacturer Spec Size (DxL) | 2.87 x 3.9” (73 x 99mm) | 3.04 x 3.96” (77.2 x 100.6mm) |
| Measured Size (DxL) | 2.88 x 4.1” (73 x 104.1mm) | 3.04 x 4.26” (77.2 x 108.2mm) |
| Max Length at Full Extension | 4.1” (104.1mm) | 4.26” (108.2mm) |
| Internal Zoom? / Extends with Zoom? | Y / N | Y / N |
| Internal Focusing? / Extends with Focusing? | Y / N | Y / N |
| Lens Hood Size (DxL) | 3.42 x 1.27” (86.8 x 32.3mm) | 3.58 x 1.39” (90.9 x 35.2mm) |
| Lens Length with Hood (Min-Max) | 5.07 - 5.07” (128.9 - 128.9mm) | 5.2 - 5.2” (132 - 132mm) |
| Size of Rings: Focus / Zoom | 0.54” / 1.42” (13.7mm / 36mm) | 0.73” / 1.12” (18.5mm / 28.5mm) |
| Filter Size | 67mm UV ► CP ► | 72mm UV ► CP ► |
| Front Element (Filter Mount) Rotates | N | N |
| Focus | ||
| AF Motor Type | RXD Stepping | Stepping Motor |
| Full Time Manual Focus | Y | Y |
| Focus Ring Rotation | 240 ° | 360° |
| Focus Limiter? / Focus Limiter Ranges | N | N |
| Distance Scale? / Type | N | N |
| Close Focus | ||
| Spec Min Focus Distance (Wide / Long) | 7.48” / 10.24” (190mm / 260mm) | 9.84” (250mm) |
| Tested Min Focus Distance (Wide / Long) | 6.85” / 8.7” (174mm / 221mm) | 9.57” / 9.57” (243mm / 243mm) |
| Maximum Magnification | 0.19x | 0.18x |
| Features | ||
| Zoom Ring Rotation | 65 ° | |
| Tripod Ring Included? / Removable? | N | N |
| Zoom Ring Lock Switch? | N | |
| Lens Hood Included / Model? | Y / HA046 Buy ► | Y / LH756-01 Buy ► |
| Weather Sealed? / Filter Required? | Y / | Y / |
| Image Stabilization? / Stops? / Tripod Sensing? | N | N |
| Extender Compatible? | N | N |
| Case Included? / Type? | N / | N / |
| 47.25" x 31.5" Subject Framing Distance | 17mm = 2.16' 20mm = 2.5' 24mm = 3.0' 28mm = 3.37' |
16mm = 1.99' 20mm = 2.55' 24mm = 3.00' 28mm = 3.44' |
| 1200mm x 800mm Subject Framing Distance | 17mm = 658mm 20mm = 761mm 24mm = 916mm 28mm = 1027mm |
16mm = 607mm 20mm = 777mm 24mm = 913mm 28mm = 1048mm |
| Review | Tamron 17-28mm f/2.8 Di III RXD Lens | Sigma 16-28mm F2.8 DG DN Contemporary Lens |
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