EX 10-20 / 4-5,6 DC HSM Expert Reviews

If you are looking at getting this lens for your DSLR camera and you shoot mostly portraits and landscapes then you shouldn't be disappointed. Any other fast moving images may require a different lens and there are other lenses in the Sigma range that ...

Maximum aperture available of F2.8, Good for portait photography, Quieter Focus, Compatibale with SIGMA, Canon, Nikon, Sony and Pentax Autofocus (AF) mounts

The Sigma 24-70mm F2.8 EX DG HSM lens comes with a large aperture DG...

Nikon and Canon models in this focal length/aperture will set you back about $1,500 or higher. In contrast, Sigma's new 24-70mm f/2.8 IF EX DG HSM has a street price of just under $900.

In terms of a workhorse focal length, there are few photographers who wouldn't be caught dead without a quality 24-70mm f/2.8 lens in their camera bags. Nikon and Canon models in this focal length/aperture will set you back about $1,500 or higher. In ...

The Sigma AF 50mm f/2.8 EX macro DG is an excellent lens without any significant optical flaws. Compared to the Canon EF-S 60mm f/2.8 USM macro it shows less vignetting at wide-open aperture - other than that both lenses perform quite similar. ...

One of the best situations in which to consider a third party lens is when the camera body manufacturer does not have an equivalent offering. Meet the Sigma 20mm f/1.8 EX DG Lens - as of this writing, Canon does not offer a lens this wide with an ...

The Sigma 18-125mm f/3.8-5.6 DC OS HSM Lens review is a reasonably-priced lens that comes in a small package and packs a really nice focal length range

A focal length lock switch is provided - this lets you intentionally lock the lens at 18mm to prevent gravity-induced zoom creep. It is not needed on my lens at this point as the zoom ring is somewhat stiff (not bad), though I suppose that long term ...

Compact, lightweight zoom lens designed to match digital SLRs with APS-C size image sensors. Aperture range: f/3.5-22 Min focus: 25cm (9.8in

'Lens Of The Year 04-05' according to its EISA award, the Sigma 12-24mm EX DG HSM covers both full frame and APS-C too. Does it provide the best for both worlds? The What Digital Camera Sigma 12-24mm EX DG lens review investigates...

Full-frame capability

Lower APS-C resolution

Following in the footsteps of Sigma's full-frame 12-24mm DG zoom, the 10-20mm DC version has a lot to live up to. What Digital Camera's Sigma 10-20mm EX DC HSM review sees if it lives up to the hype...

Good all-round performance

Nothing really

Sigma's 24-70mm f2.8 is considerably cheaper than other premium zoom lenses, but is it as good? The What Digital Camera Sigma 24-70mm f/2.8 IF EX DG HSM lens review...

Sigma's new 10-20mm 1:3.5 EX DC HSM replaces an earlier, slower ultra-wide zoom lens that was released late in 2004. Designed specifically for DSLR cameras with 'APS-C format' sensors, it is offered in mounts to suit Sigma, Nikon, Canon, Sony and ...

Photo Review's Imatest tests showed the review lens delivered its best performance between f/4 and f/8 and highest resolution with the 20mm focal length. Beyond f/11, resolution tailed off as the influence of diffraction increased. Interestingly, ...