18-200mm F3.5-6.3 DC Macro OS HSM | Contemporaryhttp://www.sigmaphoto.com/product/18-20 ... ntemporary
50mm F1.4 DG HSM | Arthttp://www.sigmaphoto.com/product/50mm-f14-dg-hsm-art
The new 50mm is very interesting. All new design. Longer to cram in many more elements, but still lighter than the old one. It will be one to watch as it could be the best 50mm. I'll leave it open for people to debate what "best" means to them, but for me, I'm hoping for decent resolution across the frame, controlled off-axis aberrations and in particular low longitudinal CA. dpreview has some text suggesting these conditions will be met, but I've not managed to verify those statements elsewhere yet. If all this holds out, I would go as far as to call it the Otus for the masses.