Sigma 100-400mm f/5-6.3 DG OS HSM | C review

The Sigma 100-400mm f/5-6.3 DG OS HSM | C shoehorns powerful telephoto reach into a compact build

Sigma 100-400mm f/5-6.3 DG OS HSM | C
(Image: © Sigma Imaging)

Digital Camera World Verdict

Picking up the baton from ‘compact’ 70-300mm telephoto zooms, this full-frame compatible Sigma gives extended reach while maintaining a conveniently lightweight build. Although relatively small, it packs a range of fancy features and delivers very pleasing image quality and all-round performance, all at a competitive price. It’s a sound choice for Canon and Nikon DSLRs of both APC-C and full-frame formats.


  • +

    Powerful telephoto reach

  • +

    Fairly compact and lightweight

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    High-tech features


  • -

    No optional tripod mount ring

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    Sharpness could be better

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The Sigma 100-400mm f/5-6.3 DG OS HSM | C breaks new territory. In days gone by, Sigma was renowned for its third-party 70-300mm zooms, which delivered pretty good performance while undercutting the cost of own-brand Canon and Nikon alternatives. Sigma also dabbled in slightly smaller telephoto zooms for APS-C format cameras, but they’ve all fallen by the wayside. As part of its ‘Global Vision’ line-up, Sigma has reinvented the budget telephoto zoom in the shape of this 100-400mm Contemporary lens.


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Matthew Richards

Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! 

His expertise with equipment doesn’t end there, though. He is also an encyclopedia  when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. 

In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.