Canon RF 10-20mm f/4 L IS STM Review

Introduction Lately, the manufacturers have started to leave the beaten path and pushed lenses with rather extreme specs in the ultra-wide segment. 14-XXmm or 16-XXmm zoom lenses have been “mainstream” for quite some time. A few 12-xx zoom lenses exist as well. However, Canon has thrown the gauntlet with its new Canon RF 10-20mm f/4 L …