I guess many of us were waiting for this: the possibility to use Sigma's excellent…
Sigma Lenses Holiday Comparison Chart Packed With Information About the Line-Up
The chart was made by Flickr user Sigma Jack and Sigma’s‘ design wizard’ Emi Erata. The entire Sigma line-up is represented, and it is a lens size comparison. The chart contains lots of interesting facts about Sigma lenses, and to easily see everything that’s shown you better get the full sized image of the chart here.
[The Phoblographer via PetaPixel]