Compare Tamron 50-400mm F4.5-6.3 vs Pentax-D FA 70-210mm F4 vs Pentax-D FA 24-70mm F2.8
Construction
Aperture Blades
9 blades, rounded aperture blades
9 blades
9 blades
Colors
Black
Black
Black
Form Factor
Super Telephoto Zoom Lens
Super Telephoto Zoom Lens
Standard Zoom Lens
Image Size
Full-Frame
APS-C
Full-Frame
Lens Barrel
Focus limiter, Distance scale
Distance scale
Lens Mount
Sony E-mount, Sony E-mount
Pentax K-mount
Pentax K-mount
Material
Magnesium alloy
Motor
Linear Motor
Ring-type ultrasonic
Ultrasonic
Optical Formula | Elements
24 elements
20 elements
17 elements
Optical Formula | Groups
18 groups
14 groups
12 groups
Optical Formula | Special Glass
2 anomalous dispersion and 3 ED elements + HD coating groups
Three ED + four aspherical elements + HD Coating groups
Dimensions
Filter Diameter
67 mm / 2.64 in
67 mm / 2.64 in
82 mm / 3.23 in
Size | Diameter
89 mm / 3.50 in
79 mm / 3.11 in
89 mm / 3.50 in
Size | Length
183 mm / 7.20 in
175 mm / 6.89 in
110 mm / 4.33 in
Weight
1155 g / 40.81 oz
819 g / 28.94 oz
787 g / 27.81 oz
Function
Angle Of View
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical (wide) ~ 6.2° Diagonal | 5.2° Horizontal | 3.4° Vertical (tele)
23.3° Diagonal | 19.5° Horizontal | 13.0° Vertical (wide) ~ 7.9° Diagonal | 6.5° Horizontal | 4.4° Vertical (tele)
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical (wide) ~ 34.4° Diagonal | 28.8° Horizontal | 19.5° Vertical (tele)
Aperture
f/4.5–6.3 ~ f/22–32
f/4 ~ f/32
f/2.8 ~ f/22
Autofocus
Yes
Yes
Yes
Crop Factor
1.5
Focal Length
50 mm ~ 400 mm
70 mm ~ 210 mm
24 mm ~ 70 mm
Focal Length (35mm Equivalent)
105.0 mm ~ 315.0 mm
Focus Type
Internal
Internal
Internal
Image Stabilization
Yes
No
No
Weather Resistance
Yes
Yes
Yes
Zoom Type
External zoom
Internal zoom
Performance
Max Magnification
0.5x
0.32x
0.2x
Min Focus Distance
250 mm / 9.84 in
950 mm / 37.40 in
380 mm / 14.96 in
Production
Accessory
Lens hood included
Lens hood included
Lens Hood: PH-RBD82 (supplied)
Debut
2022-08-24
2020-01-22
2015-09-24
Reviews
Neofiliac score
59%
31%
59%
Pros
- Optically stabilized
- Weather-sealed
- Versatile focal range
- Weather-sealed
- Beautifully built
- Very useful focal range
- Weather-sealed
- Good autofocus performance
- Well priced for f/2.8 standard zoom
Cons
- Dark maximum aperture
- Long & heavy
- Questionable image quality of a superzoom
- Dark maximum aperture
- Not as well built as newer Pentax lenses
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