Sigma AF 18-50mm f/2.8 EX DC Aspherical IF - Review / Test Report - Sample Images & Verdict
Lens Reviews - Canon EOS (APS-C)
Article Index
Introduction
Analysis
Sample Images & Verdict

Page 3 of 3

Sample Shots

Ok, finally here're some sample shots taken with the EOS 350D (converted RAWs via RawShooter Essentials 1.1).

Click on a thumbnail to view the original file (opens in a separate window). Please note that the originals are FULL SIZE samples (=several megabytes) thus requiring a significant amount of bandwidth so please take care of the limited resources here.

Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 50.0mm
Exposure Data: f/8.0 @ 1/160s
Size 2312x3472
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 40.0mm
Exposure Data: f/10.0 @ 1/160s
Size 2312x3472
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 18.0mm
Exposure Data: f/2.8 @ 1/2000s
Size 2312x3472
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 18.0mm
Exposure Data: f/8.0 @ 1/250s
Size 2312x3472

Verdict

The Sigma AF 18-50mm f/2.8 EX DC is an interesting alternative to the basic kit zooms - a higher quality one that is. The performance is generally very good especially in the center of the image. For edge to edge sharpness you may prefer to stop down a little specifically at 18mm where the extreme corners are soft at wide-open aperture. Chromatic aberrations can be disturbing if not corrected and purple fringing can be a quite significant problem at large aperture setting as well (not completely correctable). Typical for many standard zooms the barrel distortions at the wide-end are very pronounced though the issue fades rapidly with longer settings.
The build quality is very decent and maybe a little better than other lenses in this price class and zoom range.

All-in-all the 18-50mm f/2.8EX is not a lens without flaws but the package is quite sound especially when considering the large max. aperture, the price as well as the competition.

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

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