Find a top lens for landscape photography, with our run-down of the best wide-angle zoom lenses for mirrorless and DSLR ...

The lens in question was a Sigma 15-30mm f/3.5-4.5 EX DG, built to work with a Sigma camera using the SA mount. As it turns out, the SA mount is actually based on the Canon EF mount, using the ...

and a more basic 35mm f/1.4 full-frame lens. Panasonic's Lumix cameras use the L-mount system. Since Leica and Sigma also use the L-mount, it means that Panasonic camera owners have additional ...