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Tamron 18-300mm F3.5-6.3 Di III-A VC VXD vs Sigma 18-50mm F2.8 DC DN | Contemporary 021

Both are Sony E zoom lenses for APS-C. Here is what actually differs.

Pick the Tamron 18-300mm F3.5-6.3 Di III-A VC VXD if

  • You need more reach: 300mm vs 50mm at the long end
  • You shoot handheld in dim light or video: it has optical image stabilization and the Sigma 18-50mm F2.8 DC DN | Contemporary 021 does not
  • You want bigger close-ups: 0.5× vs 0.36× maximum magnification

Pick the Sigma 18-50mm F2.8 DC DN | Contemporary 021 if

  • You need ⅔ stop more light for low light or background blur (f/2.8 vs f/3.5)
  • You want the lighter lens to carry: 330 g lighter (290 g vs 620 g)
  • You shoot close-ups: it focuses down to 0.12 m vs 0.15 m
  • You want a compact lens: 76.5 mm vs 125.6 mm long
  • Our notes say it suits: Everyday APS-C shooting, vlogging and travel, low-light snapshots

Spec differences

13 differences
Specifications that differ between the Tamron 18-300mm F3.5-6.3 Di III-A VC VXD and the Sigma 18-50mm F2.8 DC DN | Contemporary 021
Tamron 18-300mm F3.5-6.3 Di III-A VC VXD Sigma 18-50mm F2.8 DC DN | Contemporary 021
Brand
Tamron
Sigma
Focal length
18-300mm
18-50mm
Max aperture
f/3.5
f/2.8 ⅔ stop faster
Weight
620 g
290 g lighter
Length
125.6 mm
76.5 mm shorter
Diameter
75.5 mm
61.6 mm slimmer
Filter thread
67 mm
55 mm
Min focus distance
0.15 m
0.12 m closer
Max magnification
0.5× larger
0.36×
Optical design
19 elements / 15 groups
13 elements / 10 groups
Autofocus motor
VXD
Stepping motor
Image stabilization
Yes stabilized
No
Weather sealing
Yes
not listed
5 identical specs hidden: mount, type, format, aperture blades, released. Show all
Mount
Sony E both
Type
Zoom both
Format
APS-C both
Aperture blades
7 both
Released
2021 both

Our notes

Tamron 18-300mm F3.5-6.3 Di III-A VC VXD

This 18-300mm f/3.5-6.3 full-frame superzoom lens from Tamron fits Sony E mount cameras, with Vibration Compensation. The wide-to-tele range makes it a one-lens option for travel and everyday shooting.

Our notes

Sigma 18-50mm F2.8 DC DN | Contemporary 021

A compact f/2.8 standard zoom for APS-C E-mount cameras, weighing about 290 g. It takes 55mm filters and offers a close focus distance of 0.121 m.

Pros

  • Constant f/2.8
  • Very light at 290 g
  • Close focus 0.121 m
  • Stepping motor autofocus

Cons

  • APS-C only
  • No stabilization in the lens
  • Less range than a kit zoom

More comparisons

Compare other lenses or browse our best-of guides.