Sony 20mm f/1.8 vs Sigma 20mm f/2: Which Wide-Angle Actually Wins for Landscape and Astro Work?
Every time I’m about to pull the trigger on a lens, I end up in the same rabbit hole: spec sheets, forum arguments, and sample images shot under perfect studio conditions that tell me almost nothing about how the thing behaves when I’m freezing at 2 a.m. trying to photograph the Milky Way outside Denver. That’s why I stopped trusting spec sheets and started trusting side-by-side field tests. Tony and Chelsea Northrup do some of the most methodical lens comparisons on YouTube, and their recent shootout between the Sony 20mm f/1.