Sigma 20mm f/1.8 EX AF Review Round-Up
If you own or have used this lens, let us know what you think! Leave your comments and thoughts below.
Digital Picture
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 aperture this large. Unfortunately, I consider the Sigma 20mm f/1.8 EX DG Lens to be unusable at f/1.8 unless you are looking for a soft-focus effect. This lens is one of the softest I’ve seen wide open. Realistically, this will be an f/2.8 lens to most people as the center does not become decently sharp until this aperture. Sorry Sigma, this one is a dud. If you want a fast 20mm lens, I suggest saving for the Canon EF 16-35mm f/2.8 L USM Lens. It far surpasses the performance of the current Sigma and Canon 20mm lenses in all regards. READ FULL REVIEW