Introducing the ultimate portable ultra-wide-angle landscape lens. Meet the SIGMA 17mm F4 DG DN | C

If you're in the market for a landscape lens that won't weigh you down, but still boasts incredible image quality and uncompromising build quality, the full-frame 17mm F4 from Sigma will blow you away. It weighs in at only 225g, so you can carry it around all day with ease. It's available for L-Mount and Sony E-mount cameras.

Find out what landscape pro Mark Cornick thinks of the 17mm F4 as he tests it out on the south coast of England.

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