Sigma 28-45mm F1.8 DG DN Art Review: The First Full-Frame F1.8 Zoom Replaces Three Primes
Zooms usually stop at f/2.8. Fast primes go to f/1.8 or f/1.4. The Sigma 28-45mm F1.8 DG DN Art, announced in June 2024 at $1,349, refuses that split. It’s the first full-frame zoom with a constant f/1.8 aperture, covering 28mm, 35mm and 45mm, three of the …