The Sigma 18-35 f/1.8 remains my pick for BEST crop (APS-C) sensor. Pairs well with Canon and Nikon. It is also possible to use the Sigma 18-35 on Micro 4/3 cameras, like the Panasonic GH4 and GH5 with Metabones Speed Booster Ultra (Canon EF-mount). Using the speed booster gives you an extra stop of aperture!Buy the Sigma 18-35 from B&H Photo Canon | NikonWant more zoom? The Sigma 50-100 is heavy but also fantastichttps://www.youtube.com/watch?v=gWo3y7_8vcA