Sigma's latest optic claims the title of being the first full-frame zoom lens with an f/2 aperture, but is it a viable alternative to the manufacturer's wideangle primes? Michael Topham finds out.

Jack of all trades: master of none. We're saying it again. It isn't the absolute sharpest lens, but it's close. It doesn't have the absolute best colors, but it's close. Bokeh? Yeah, it's close there too. See where we're going with this?

Three years ago, Sigma released three new product lines (Contemporary, Art and Sport) with the intention of streamlining its lens range while simultaneously bringing its products up to date.

Sigma argues that despite the limited zoom range, this lens can actually replace up to 3 primes in a photographer's bag (the classic 24, 28 and 35mm primes), while still providing a similarly fast f/2 aperture at all these focal lengths... and any setting inbetween.