Here's our review of the mighty Sigma 50-500mm f/4.5-6.3 DG OS HSM
With a mighty 10x zoom, the 50-500mm offers the most comprehensive focal range of any lens in our test. It’s suited to both full-frame and APS-C DSLRs, and when paired with a DX format Nikon provides an effective focal range of 75-750mm. It’s available in mounts for Sigma, Canon, Nikon, Sony and Pentax cameras. The lens features Sigma’s Optical Stabilisation (OS) system, which lets you shoot with shutter speeds up to 4 stops slower without the blur of camera shake, and has settings for both general shooting and panning.
Sigma's 50-500mm features full-time manual override
Housed within the barrel are 22 elements in 16 groups, and four SLD (Special Low Dispersion) elements work to reduce chromatic aberration. To set the focus, the HSM (Hyper Sonic Motor) works speedily and in near-silence, with full-time manual override. In our tests the lens was pleasingly sharp across the entire frame, even at the wider aperture settings. We did detect some chromatic aberration and pin-cushion distortion, but this is easy to remedy when processing.
Pleasing image quality
- Minimum aperture: f/22
- Elements: 22/16
- Filter size: 95mm
- Minimum focus distance: 0.5-1.8m
- DxH: 104x219mm
- Weight: 1970g
- Find out more on the Sigma website