Sigma Art series

The Sigma 24-70mm f/2.8 Art is a masterpiece of optical engineering, but that massive 82mm front element is a literal magnet for fingerprints, dust, and potential scratches. I’ve seen far too many photographers pair this $1,100 lens with a $10 bargain-bin filter, effectively neutering its world-class sharpness. After years of testing glass in the field,…