Conclusion

With so few native lenses available in the EF-M mount, it's great to see Sigma introduce all three of their popular F1.4 DC DN C primes for Canon's much-neglected APS-C system, so much so that we decided to test all three at once.

While the 56mm is undoubtedly our pick of the bunch, all three would make great additions to the rather threadbare camera bag of a Canon EOS M shooter.

This is especially true for the wide-angle Sigma 16mm F1.4 DC DN C and the short-telephoto Sigma 85mm F1.4 DC DN C, as there are no direct rivals in the Canon range. The only alternatives choices to date have been adapting one of Canon's admittedly huge range of EF and EF-S lenses to the EOS M using the EF-EOS M mount adapter.

It's a tougher sell for the Sigma 30mm F1.4 DC DN C because of the EF-M 32mm f/1.4 STM, but even then the Sigma is pretty compelling simply because of its price - some £$200 less than the Canon lens.

So, if you're a frustrated Canon EOS M user who has outgrown their kit zoom and doesn't want to adapt a Canon DSLR lens, the introduction of three well-built, high-quality, ultra-fast Sigma lenses in the native EF-M will be music to your ears.

The EF-M 32mm also deserves a very close look, too, but in our view all three Sigma lenses would make an excellent addition to any Canon APS-C shooter's kit bag, greatly expanding its versatility in low light and making it easy to achieve shallow depth-of-field effects.

Now if only Sigma would make a 35mm-equivalent F1.4 prime lens too...

Ratings (out of 5)
Design	4.5
Features	4
Ease-of-use	4.5
Image quality	4.5
Value for money	5