Review on Sigma 24 105Mm F4 0 Lens Canon by Lori Uniacke

Definitely my favorite lens. Very versatile and sharp. My only concern is that this lens isn't weatherproof, which is a significant limitation for a true general-purpose lens. In all other respects it outperforms both version 1 and 2 of the Canon 24-105mm, including T-stop values (let more light through). IS is as good as advertised. I only give it 4 stars because of the weather protection.