OK just about sums this lens up. Although it’s better made than the Canon 18-55 EFS, if I had to choose, I’d rather put up with the plastic Canon product.

The Canon 18-55 EF-S has very high central sharpness and is perfectly useable overall at f8 on, whereas the Sigma 18-50 DC has better edge performance, but is nowhere near as sharp in the center. The newer Canon 18-55 IS is slightly better optically so is even further ahead.

Performance is quite similar to the Sony / Minolta 18-70, as in not that good really, and for Nikon buyers It’s not even close to either the build or optical quality of the Nikon 18-70mm f3.5-4.5 DX.

To be fair to Sigma this isn’t an expensive lens, and for snapshots on the beach and small prints, it would be fine, but I’d say if you’re spending the money on a DSLR you’ll want something better. The much more expensive Sigma 18-50 f2.8 is reputedly excellent. Otherwise stick with the kit lenses - especially if you’re buying Nikon where their 18-70 DX is where your cash should go.

Not Recommended