Sigma 18-50mm F2.8 DC DN: hands-on with the lens that wants to
The One Lens Every Photographer Should Have and Use: The 50mm
Quick Sharpness Comparison - Erik Moberg's personal homepage
Performance tests of the different lenses I got for my Canon 550D
Why every photographer should own a 50mm lens - Simon Wiffen
50mm Lens Vs 18-55mm Lens, Which One Is Best For you
If You Shoot Fuji, You've Got To Try This Lens
Kit Lens vs Prime Lens: Which One To Use and When?
Prime or Zoom Lens: Which One Is Right for You? - ALC
Sigma 18-50mm F2.8 DC DN Contemporary for Fujifilm X Mount