Sigma 50mm F1.4 EX DG HSM
The Sigma 50mm 1.4 has smooth out-of-focus backgrounds, improved sharpness at large apertures, and lessened vignetting due to its large lens barrel. It's a far better portrait lens on APS-C than legacy primes designed for 35mm film, as well as an extremely competent standard on 35mm full-frame.
Those looking for a sharp, fast normal lens with quick autofocus and good build quality -- especially APS-C camera owners in search of the perfect portrait lens.
Anyone who wants their prime lenses to be small and lightweight.
Sigma 50mm f/1.4 EX DG HSM review
By: Jon Tarrant, What Digital Camera (Feb 1, 2010)
An amazing lens that is priced above the norm but delivers results that are similarly elevated. As it is available in a range of lens mounts, the greatest number of photographers have access to its immense power.