Tamron 28-75mm f/2.8 Di III RXD Lens Compared to the Sony FE 24-70mm f/2.8 GM Lens

SpecificationsTamron 28-75mm f/2.8 Di III RXD LensSony FE 24-70mm f/2.8 GM Lens
  Tamron 28-75mm f/2.8 Di III RXD Lens Sony FE 24-70mm f/2.8 GM Lens
Year Introduced20182016
Mounts OnFull Frame, APS-CFull Frame, APS-C
Lenses / Groups15/1218/13
Angle of View: Diagonal75° 23' - 32° 11'84° - 34°
 
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 19.4 oz  (550g) 31.3 oz  (886g)
Actual Weight 19.1 oz  (540g) 31.4 oz  (890g)
Lens Hood Weight 0.9 oz  (25g) 1.2 oz  (35g)
In-Use Weight 19.9 oz  (565g) 32.7 oz  (925g)
 
Size  
Manufacturer Spec Size (DxL) 2.87 x 4.64”  (73 x 117.8mm) 3.45 x 5.35”  (87.6 x 136mm)
Measured Size (DxL) 2.87 x 4.84”  (73 x 123mm) 3.45 x 5.57”  (87.6 x 141.4mm)
Max Length at Full Extension 5.82”  (147.9mm) 6.79”  (172.5mm)
Internal Zoom? / Extends with Zoom? N / Y N / Y
Zoom Extension Length 0.99”  (25.1mm) 1.26”  (32mm)
Internal Focusing? / Extends with Focusing? Y / N Y / N
Lens Hood Size (DxL) 3.41 x 1.43”  (86.7 x 36.4mm) 4.09 x 1.94”  (103.9 x 49.3mm)
Lens Length with Hood (Min-Max) 5.99 - 6.95”  (152.1 - 176.6mm) 7.2 - 8.38”  (182.8 - 212.8mm)
Size of Rings: Focus / Zoom 0.57” / 1.46”  (14.6mm / 37.2mm) 0.93” / 1.28”  (23.5mm / 32.5mm)
Filter Size 67mm  UV ► CP ► 82mm  UV ► CP ►
Front Element (Filter Mount) Rotates N N
 
Focus  
AF Motor Type RXD Stepping SSM
Full Time Manual Focus Y Y
Focus Ring Rotation 1440° 138°
Focus Limiter? / Focus Limiter Ranges N N
Distance Scale? / Type N N
 
Close Focus  
Specified Min Focus Distance 7.48”  (190mm) 14.96”  (380mm)
Tested Min Focus Distance (Wide / Long) 7.24” / 15.12”  (184mm / 384mm) 13.78” / 14.65”  (350mm / 372mm)
Maximum Magnification (MM) 0.34x 0.24x
 
Features  
Zoom Ring Rotation 60° 70°
Tripod Ring Included? / Removable? N /
Zoom Ring Lock Switch? N Y
Lens Hood Included / Model? Y / HA036 Buy ► Y / ALC-SH141 Buy ►
Weather Sealed? / Filter Required? Y / Y /
Image Stabilization? / Stops? / Tripod Sensing? N N
Extender Compatible? N N
Case Included? / Type? N / Y / Padded Nylon
47.25" x 31.5" Subject Framing Distance 28mm = 3.39'
35mm = 4.12'
50mm = 5.95'
75mm = 8.49'
24mm = 2.97'
35mm = 4.27'
50mm = 6.08'
70mm = 8.04'
1200mm x 800mm Subject Framing Distance 28mm = 1032mm
35mm = 1255mm
50mm = 1813mm
70mm = 2588mm
24mm = 905mm
35mm = 1302mm
50mm = 1854mm
70mm = 2451mm
 
Review Tamron 28-75mm f/2.8 Di III RXD Lens Sony FE 24-70mm f/2.8 GM Lens
 
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My Recommended Retailers

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B&H Photo
Adorama
Amazon.com
Beach Camera or BuyDig.com
eBay (Choose trustworthy sellers only)
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Rent the Tamron 28-75mm f/2.8 Di III RXD Lens

Do you need/want the Tamron 28-75mm f/2.8 Di III RXD Lens for only a short period of time? Or, would you feel more comfortable buying after having a hands-on trial period? Consider renting. Renting is fast and easy. The rental companies I recommend below are excellent to work with. Schedule your rental now:

LensRentals.com
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