Photographing COLORADO'S Great Sand Dunes NP with the Leica SL-2 and SIGMA lenses. L-Mount Alliance

SIGMA ambassador Liam Doran takes L-Mount Alliance gear into to field to see how it performs. He photographs Great Sand Dunes National Park with the Leica SL-2 camera and numerous SIGMA lenses including the 100-400mm DG DN and 28-70mm C.