Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Tokina AT-X 240 24-40mm f/2.8
Both are Pentax K zoom lenses. Here is what actually differs.
Pick the Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM if
- You want a wider view: 16mm vs 24mm at the wide end
- You need more reach: 50mm vs 40mm at the long end
- You shoot close-ups: it focuses down to 0.3 m vs 0.4 m
- Our notes say it suits: Events on APS-C, portraits, general professional use
Pick the Tokina AT-X 240 24-40mm f/2.8 if
- You want the lighter lens to carry: 45 g lighter (520 g vs 565 g)
- You shoot full frame: the Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM is made for APS-C
- You want a compact lens: 78 mm vs 99 mm long
Spec differences
11 differences| Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM | Tokina AT-X 240 24-40mm f/2.8 | |
|---|---|---|
| Brand |
Pentax
|
Tokina
|
| Format |
APS-C
|
Full frame
|
| Focal length |
16-50mm
|
24-40mm
|
| Weight |
565 g
|
520 g
lighter
|
| Length |
99 mm
|
78 mm
shorter
|
| Diameter |
84 mm
|
76 mm
slimmer
|
| Filter thread |
77 mm
|
72 mm
|
| Min focus distance |
0.3 m
closer
|
0.4 m
|
| Aperture blades |
not listed
|
7
|
| Optical design |
not listed
|
17 elements / 13 groups
|
| Autofocus motor |
not listed
|
Manual focus
|
4 identical specs hidden: mount, type, max aperture, image stabilization. Show all
- Mount
- Pentax K both
- Type
- Zoom both
- Max aperture
- f/2.8 both
- Image stabilization
- No both
Our notes
Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM
A constant f/2.8 standard zoom for Pentax APS-C bodies, with SDM focusing. It weighs about 565 g and takes 77mm filters.
Pros
- Constant f/2.8
- SDM autofocus
- Weather-resistant build
- 77mm filters
Cons
- APS-C only
- SDM motors in some units have failed with age
- No lens stabilization
Our notes
Tokina AT-X 240 24-40mm f/2.8
More comparisons
Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)
wider (16mm) vs everyday APS-C shooting
Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Sigma 17-50mm f/2.8 EX DC OS HSM
wider (16mm) vs stabilized
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) vs Tokina AT-X 240 24-40mm f/2.8
wider (17mm) vs covers full frame
Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Sigma 24-70mm f/2.8 DG OS HSM Art
wider (16mm) vs more reach (70mm)
Pentax smc Pentax-DA* 16-50mm f/2.8 ED AL IF SDM vs Tokina AT-X 240 24-40mm f/2.8
wider (16mm) vs covers full frame
Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Tamron SP 15-30mm f/2.8 Di VC USD
more reach (50mm) vs wider (15mm)