The Sigma Corporation are pleased to announce the launch of the new APO 150-500mm f/5-6.3 DG OS HSM. This ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows photographers to ...

For wildlife photographers, the Sigma 500mm f/5.6 DG DN OS Sport seems like something of a holy grail lens. For a very long time, high-quality telephoto primes were an inaccessible dream for many, ...

Materials play a part in the carry-friendly design, too. The barrel uses a mix of light-but-tough thermally stable composite plastic and magnesium. In testing, I mostly used the lens with the compact ...

Once more into the breach dear friends, once more; Or, in this case, onto the mount of Ian Andrews camera for a shakedown of this new lens from Sigma.