Sigma AF 80-400mm f/4.5-5.6 EX APO OS - Review / Test Report - Sample Images & Verdict
Lens Reviews - Canon EOS (APS-C)

Samples Images

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Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 315.0mm
Exposure Data: f/8.0 @ 1/1000s
Size 2311x3471
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 400.0mm
Exposure Data: f/8.0 @ 1/1250s
Size 2311x3471
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 400
Focal Length 400.0mm
Exposure Data: f/11.0 @ 1/250s
Size 2311x3471
Make Canon
Model Canon EOS 350D DIGITAL
ISO Speed 200
Focal Length 80.0mm
Exposure Data: f/8.0 @ 1/800s
Size 2136x3140

Verdict

The Sigma AF 80-400mm f/4.5-5.6 EX OS is an impressive piece of equipment. In terms of build quality Sigma seems to have catched up with the genuine brand offerings. Nonetheless the lens didn't convince completely. In the lab the sheer quality figures are surely good enough with slightly better MTF results than the Canon EF 100-400mm f/4.5-5.6 USM L IS but in the field the OS didn't really feel as reassuring or mature (or I had too much coffee at the time ...). The rather odd shutter delay issue when shooting several images in a row didn't help either to lift the impression. It's interesting that Sigma managed to implement FTM (full-time manual focusing) combined with a conventional AF motor - this is certainly something that we'd like to see in other lenses as well. On the downside the AF is a little on the slow and noisy side. All-in-all the lens should go through a little extra fine-tuning.

Optical Quality:    
Mechanical Quality:
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