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Sigma AF 17-50mm f/2.8 EX DC OS HSM (Nikon) - Review / Test Report - Sample Shots & Verdict |
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Lens Reviews -
Nikon / Nikkor (APS-C)
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Page 3 of 3
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 |
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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.
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