Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM vs Sigma 24-70mm f/2.8 DG OS HSM Art
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 shoot close-ups: it focuses down to 0.3 m vs 0.37 m
- Our notes say it suits: Events on APS-C, portraits, general professional use
Pick the Sigma 24-70mm f/2.8 DG OS HSM Art if
- You need more reach: 70mm vs 50mm at the long end
- You shoot handheld in dim light or video: it has optical image stabilization and the Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM does not
- You shoot full frame: the Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM is made for APS-C
Spec differences
13 differences| Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM | Sigma 24-70mm f/2.8 DG OS HSM Art | |
|---|---|---|
| Brand |
Pentax
|
Sigma
|
| Format |
APS-C
|
Full frame
|
| Focal length |
16-50mm
|
24-70mm
|
| Weight |
565 g
|
not listed
|
| Length |
99 mm
shorter
|
107.6 mm
|
| Diameter |
84 mm
slimmer
|
88 mm
|
| Filter thread |
77 mm
|
82 mm
|
| Min focus distance |
0.3 m
closer
|
0.37 m
|
| Max magnification |
not listed
|
0.21×
|
| Aperture blades |
not listed
|
9
|
| Optical design |
not listed
|
19 elements / 14 groups
|
| Autofocus motor |
not listed
|
HSM
|
| Image stabilization |
No
|
Yes
stabilized
|
3 identical specs hidden: mount, type, max aperture. Show all
- Mount
- Pentax K both
- Type
- Zoom both
- Max aperture
- f/2.8 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
Sigma 24-70mm f/2.8 DG OS HSM Art
A 24-70mm f/2.8 full-frame fast standard zoom lens, the Sigma 24-70mm f/2.8 DG OS HSM Art is designed for Pentax K mount bodies, from the Sigma Art line with Optical Stabilizer and Hyper Sonic Motor autofocus. A standard zoom from Sigma's Art line with a constant f/2.8 apertur...
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
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) vs Sigma 24-70mm f/2.8 DG OS HSM Art
wider (17mm) vs more reach (70mm)
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 70-200mm F/2.8 Di LD (IF) MACRO vs Sigma 24-70mm f/2.8 DG OS HSM Art
more reach (200mm) vs wider (24mm)
Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM vs Sigma 24-70mm f/2.8 DG OS HSM Art
more reach (135mm) vs wider (24mm)
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)