Tamron 17-28mm f/2.8 Di III RXD Lens Compared to the Sigma 16-28mm F2.8 DG DN Contemporary Lens

SpecificationsTamron 17-28mm f/2.8 Di III RXD LensSigma 16-28mm F2.8 DG DN Contemporary Lens
  Tamron 17-28mm f/2.8 Di III RXD Lens Sigma 16-28mm F2.8 DG DN Contemporary Lens
Year Introduced20192022
Mounts OnFull-FrameFull-Frame, APS-C
Lenses / Groups13/1116/11
Angle of View: Diagonal103° 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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