Bryan at The-Digital-Picture has completed his review of the brand new Sigma 135mm f/1.8 DG HSM Art and came away as impressed as most other reviewers.
From TDP
While zoom lenses typically win the popularity contests, fixed focal length models generally have some strong advantages and the Sigma 135mm f/1.8 DG HSM Art Lens is a “prime” example. Exceptional image quality, including impressive sharpness and negligible distortion, is right at the top of this lens' advantages. Having the f/1.8 aperture at a telephoto focal length can be a game-changer and there is a special wow factor in the background blur this combination creates.
The 135 Art lens brings more than just great image quality – it is the full package. Great looks, quality design … perhaps the only missing feature is optical stabilization. Read the full review
Sigma 135mm f/1.8 DF HSM Art at B&H Photo