Sturdy. Sharp. Slow: Sigma 150-600mm f5-6.3 DG DN Review

When the L-Mount Alliance formed, it allowed companies like Panasonic to jump into full-frame mirrorless with a list of lenses already available. But, one thing the L-Mount family was missing was zoom, with optics from Leica topping out at 280mm and, later, Panasonic at 300mm. When Sigma started converting its line-up of lenses to mirrorless, however, the L-Mount family gained a super-telephoto, the Sigma 150-600mm f5-6.3 DG DN Sports.