Sigma have announced a new 50mm f/1.4 lens for Four Thirds cameras.
Its wide aperture and 35mm equivalent focal length reach of 100mm should make it ideal for portraiture, perhaps even better than my favorite, the Olympus ZD 50mm f/2.0 macro.
It has 9 bladed circular diaphragm for nicely blurred backgrounds and Sigma’s HSM AF motor for quiet, fast AF.
It will be interesting to see how it performs optically on a Four Thirds as it appears to be the same design as for the full frame version which has been tested here on dpreview.com and this suggests it will not be anywhere as good optically as the Olympus ZD 50mm f/2.0 macro but does give you the option of f/1.4 with AF if you need it, albeit at less sharpness and more aberrations.
