Take your Sony or Canon crop sensor further with the new SIGMA America 12mm f/1.4 DC Contemporary and Sigma 17-40mm f/1.8 DC Art lenses! Both lenses are created with the run-and-gun photographer and filmmaker in mind, allowing for versatility that doesn't compromise on visual quality. Join Sam for a real-world test and to see his test images and footage! Learn more at B&H Explora: http://bhpho.to/4fERou1 Shop these new Sigma lenses at B&H: http://bhpho.to/46Wo6F4 | B&H Photo Video Pro Audio