Best Lens Filter for Sigma 24-70mm f/2.8 Art
The Sigma 24-70mm f/2.8 Art is a masterpiece of optical engineering, but its massive 82mm front element is a magnet for dust, fingerprints, and potential scratches. Finding the right filter is a balancing act; you don’t want to put cheap glass in front of such a sharp lens and ruin its clinical contrast. I’ve tested…