Lens Guides

Hands-on reviews, technical information, and advice on SIGMA Art, Sports and Contemporary lenses for DSLRs and mirrorless cameras.

Sigma’s 50-500mm f4.5-6.3 DG OS HSM APO AF Lens: Reader Q+As

Sigma’s 50-500mm f4.5-6.3 DG OS HSM APO AF Lens: Reader Q+As We’ve gotten a number of great reader questions since we’ve opened up the Photoworld@sigmaphoto.com hotline, and many of these relate to the very popular Sigma 50-500mm f4.5-6.3 DG OS…

High Dynamic Range Imaging with the Sigma DP1x by Jack Howard

HDRI photographer Jack Howard, author of “Practical HDRI” talks about the professional results that Sigma’s compact DP1x camera can make for serious HDR photography.

Introducing the new technical editor of Sigma’s Photo World, Jack Howard! (Part II)

Who am I? Part 2 I’m a writer! That self-portrait in my first post, (and the variation on the Sigma Home page right now,) was shot just last week at Rutgers Gardens, in New Brunswick, NJ. I first visited this…

Hi, I’m Jack Howard, and I’m working for Sigma now. It’s nice to meet you all!

Sigma’s new Web Editor, Jack Howard, talks about his background as a photographer, and long experience with Sigma gear, and invites readers to submit questions and suggestions for features.