Sigma AF 17-50mm f/2.8 EX DC OS HSM (Nikon) - Review / Test Report - Sample Shots & Verdict
Lens Reviews - Nikon / Nikkor (APS-C)

Sample Shots

The following sample shots were taken with a D7000 and RAW-converted via Capture One.

Click on a thumbnail to view the original file (opens in a separate window).

Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 50.0mm
Aperture: f/4.0
Exposure 1/800s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 50.0mm
Aperture: f/8.0
Exposure 1/320s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 32.0mm
Aperture: f/6.3
Exposure 1/320s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 29.0mm
Aperture: f/8.0
Exposure 1/200s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 32.0mm
Aperture: f/3.2
Exposure 1/1250s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 50.0mm
Aperture: f/6.3
Exposure 1/500s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 38.0mm
Aperture: f/8.0
Exposure 1/640s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 38.0mm
Aperture: f/5.6
Exposure 1/500s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 32.0mm
Aperture: f/2.8
Exposure 1/2500s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 17.0mm
Aperture: f/4.0
Exposure 1/1000s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 34.0mm
Aperture: f/5.0
Exposure 1/640s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 26.0mm
Aperture: f/8.0
Exposure 1/500s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 46.0mm
Aperture: f/8.0
Exposure 1/250s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 20.0mm
Aperture: f/8.0
Exposure 1/200s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 100
Focal Length 50.0mm
Aperture: f/2.8
Exposure 1/1000s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 125
Focal Length 17.0mm
Aperture: f/8.0
Exposure 1/320s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 125
Focal Length 17.0mm
Aperture: f/2.8
Exposure 1/1250s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 125
Focal Length 27.0mm
Aperture: f/5.6
Exposure 1/1000s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 125
Focal Length 50.0mm
Aperture: f/2.8
Exposure 1/1250s
Make NIKON CORPORATION
Model NIKON D7000
ISO Speed 125
Focal Length 50.0mm
Aperture: f/8.0
Exposure 1/500s

Verdict

The Sigma AF 17-50mm f/2.8 EX DC HSM OS is a highly competitive APS-C standard zoom lens and Sigma's best product in this class so far. It's not a flawless lens, though, but none really is. Its biggest weakness is the performance at f/2.8 - the resolution in the image center is already very high here but the image corners are soft between 17-35mm and there's some vignetting at the extreme ends of the zoom range. However, starting at f/4 it is able to compete with alternative products. The lens is very sharp across the frame at medium aperture settings with no obvious flaw across the zoom range.

The field curvature is also minimal (quite flat focus plane). Lateral CAs are not really field-relevant. The distortion characteristic is about average for a lens in this class. The quality of the bokeh (out-of-focus blur) is slightly better compared to most competitors, although you will naturally find prime lenses which perform better in this regard.

The build quality is very good in absolute terms but the rotating focus ring in AF mode and, consequently, the lack of FTM (full-time manual focusing) are a bit disappointing especially because Sigma avoided theses issues in some of their other zoom lenses like the AF 8-16mm f/4.5-5.6 DC HSM. The AF is both very fast and near silent. The tested sample had also no problem with focus accuracy. Sigma's OS ("Optical Stabilizer") is, of course, a welcome feature which the Nikon's native lens in this segment, the AF-S DX 17-55mm f/2.8, still misses.

Optical Quality:    
Mechanical Quality:
Price/Performance:
      
   What does this mean ?
 



© by photozone.de