But the f/2.8 has the added benefit of boasting a zoom range from 14mm through to 24mm. When we reviewed the Sigma 14-24mm f/2.8 DG HSM we couldn't help but notice more than a passing resemblance to the fixed 14mm focal length of Sigma’s 14mm f/1.8 DG HSM Art. The Sigma 14-24mm f/2.8 DG HSM is another lens from Sigma's 'Art' range, well known for its optical quality and high-class engineering. Chromatic aberration (color fringing) is well controlled when shooting at wide apertures and image distortion is handled equally well - not something you will find with all ultra-wide lenses. Stars appear pin-sharp, even when the aperture is opened up to its impressive f/1.8 maximum, although stopping down the aperture a little will improve the coma that appears towards the corners of the image frame at its widest opening. Performance in the field is nothing short of outstanding. The fixed focal length and extra-wide field of view are also ideal for capturing expansive vistas of the landscape and night sky. The build quality is exceptional and the lens is also weather-sealed, but this isn't much of a concern for the astrophotographer as you aren't usually out photographing the night sky when there's bad weather. At 2.58 lbs it's on the weightier side, but with heft in the hand comes heft in terms of optical quality, too. The first thing we noticed during our Sigma 14mm f/1.8 DG HSM Art review was just how heavy it is.
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