Sigma 18-50mm F2.8 DC DN | C review

The Sigma 18-50mm F2.8 DC DN | C squeezes a quart into a pint pot

Sigma 18-50mm F2.8 DC DN | C
(Image: © Matthew Richards)

Digital Camera World Verdict

A big, chunky f/2.8 standard zoom lens would look and feel out of place on a dinky little Sony or Leica APS-C format system body. Sigma solves the problem by shoehorning a useful 27-75mm effective zoom range with a fast and constant f/2.8 aperture into a remarkably compact yet well-built, weather-resistant lens. It has super-fast and virtually silent autofocus, and delivers impressive image quality. At just a quarter of the weight and price of many f/2.8 standard zooms, it’s a great buy. All in all, this Sigma is a little lens that really does punch well above its weight.


  • +

    Constant f/2.8 aperture

  • +

    Small and lightweight

  • +

    Impressive image quality


  • -

    No optical stabilizer

  • -

    Controls are basic

Why you can trust Digital Camera World Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out how we test.

The Sigma 18-50mm F2.8 DC DN | C bucks a trend. Think constant-aperture f/2.8 ‘trinity’ zooms and you’re probably thinking chunky, heavyweight lenses that are less than a perfect fit on slimline mirrorless bodies. And rightly so, given recent and back-catalogue contenders. This Sigma is an altogether more compact proposition, designed for Sony E and Leica L mount APS-C format cameras. It’s amazingly small and light for an f/2.8 zoom, even by APS-C standards, measuring a mere 65x75mm and weighing in at just 290g. Even the price tag is refreshingly lightweight.


Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

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.