Compare Tamron 18-400mm F/3.5-6.3 vs Tamron 28-300mm F/3.5-6.3
Construction
Aperture Blades
7 blades
7 blades, Circular diaphragm
Colors
Black
Form Factor
All-in-One Zoom Lens
All-in-One Zoom Lens
Image Size
APS-C
Full-Frame
Lens Barrel
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount
Canon EF-mount, Nikon F-mount, Sony A-mount
Motor
Ring-type ultrasonic
Ultrasonic
Optical Formula | Elements
16 elements
19 elements
Optical Formula | Groups
11 groups
15 groups
Optical Formula | Special Glass
Low dispersion, aspherical, hybrid aspherical elements groups
Dimensions
Filter Diameter
72 mm / 2.83 in
67 mm / 2.64 in
Size | Diameter
79 mm / 3.11 in
74 mm / 2.91 in
Size | Length
124 mm / 4.88 in
96 mm / 3.78 in
Weight
710 g / 25.09 oz
540 g / 19.08 oz
Function
Angle Of View
77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical (wide) ~ 4.1° Diagonal | 3.4° Horizontal | 2.3° Vertical (tele)
75.4° Diagonal | 65.5° Horizontal | 46.4° Vertical (wide) ~ 8.3° Diagonal | 6.9° Horizontal | 4.6° Vertical (tele)
Aperture
f/3.5–6.3 ~ f/22–40
f/3.5–6.3 ~ f/22–40
Autofocus
Yes
Yes
Crop Factor
1.5
Focal Length
18 mm ~ 400 mm
28 mm ~ 300 mm
Focal Length (35mm Equivalent)
27.0 mm ~ 600.0 mm
Focus Type
Extending front
Internal
Image Stabilization
Yes
Yes
Weather Resistance
Yes
Zoom Type
External zoom (zoom lock available)
External zoom (zoom lock available)
Performance
Max Magnification
0.34x
0.29x
Min Focus Distance
450 mm / 17.72 in
490 mm / 19.29 in
Production
Accessory
Lens hood included
Lens hood included
Debut
2017-06-23
2014-02-06
Model Name
B028
A010
Reviews
Neofiliac score
60%
60%
Pros
- Extreme zoom range
- Optically stabilized
- Zoom lock prevents zoom creep
- Weather-sealed
- Optically stabilized
- Zoom lock prevents zoom creep
Cons
- All-in-one lenses tend to offer lower IQ
- All-in-one lenses tend to offer lower IQ
- Not the highest grade of build
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