The lens is very solid and sturdy, yet not very heavy. Focus ring has full throw, rather than the very short throws on zoom lens, which may be why AF is slow.

Sigma 105mm F/2.8 EX DG Macro Lens for Sigma Digital SLR Cameras - Amazon User Review; Zoom Creep. 397 Users Online. Gifts By Price $10000-above · $5000-$9999

The Sigma 24-60mm F2.8 EX DG Lense is one of sigma's latest professional lens creations. Although simple in design, the overall lens offers a stunning array of ...

A solid-built ultra wide-angle lens.

The Sigma 20mm f/1.8 D EX DG Aspherical Lens has a clutch-like system for switch between AF and MF modes. The system is very similar to the Sigma 105mm f/2.8 EX ...

Some thoughts on the Sigma 28-105mm f/2.8-4 zoom lens ... The Sigma 28-105 is good for the money. It is a bit soft. I like using it for portrait and B&W photos. I ...

Nov 19, 2019 · That's a good question. In the past, you have the send the lens to Sigma to have the firmware updated. I don't know if there is anyway you can ...

They both offer zoom function in the 70mm to 200mm range, f/2.8 wide-open aperture for low-light work, and provide super-quiet auto-focus operation with ...

Personally, I've encountered auto focus problems with my Sigma AF105mm macro lens ever since I've had it. I find that sometimes AF is completely redundant in ...

Servicing the Sigma 105mm f/2.8 EX macro lens ... 8 EX DG MACRO -- The Perfect Zoom Lens. Thu, 03 Nov 2011 16:58:23 -0700. Sigma 150mm f2.8 APO Macro DG EX HSM ...