Cosina 19-35/3.5-4.5 Review

I bought this lens with HK$750 (second hand) with no regret at all. This is the lens I really happy with, not only because of its price, same good as the Canon EF 24-85mm f/3.5-4.5 which I previously owned. The optical performance (sharpness and contrast) is excellent from 19mm to 28mm when stopping down to f/8 (35mm is fairly good when you further stop down to f/11 or f/16). Obviously optically better than my Canon EF-S 18-55mm IS (and far more better than the Tokina AF 20-35mm f/3.5-4.5) after my several trials and tests throughout the whole range and between different apertures of these three lens. The only complaint is the accuracy of the auto focus between 19 - 28mm - when I need the best result I always need to turn the facal ring to 35mm for auto focusing first and then switch to manual focus for picture composing between the facal range.