One of my biggest criticisms of Tokina was their lack of weather sealed glass, but the new Tokina 50mm f1. 4 Opera offers it and a number of other great things. Tokina and Hoya, who provide the literal glass in the lenses for most of the industry, are very experienced lens makers and when you look at what the Tokina 50mm f1.
4 Opera really is, you start to realize that the bigger is better rend is really imperative to creating better lenses. But in comparison to many others on the market, the Tokina 50mm f1. 4 Opera offers not only weather sealing but gorgeous bokeh, sharp optics, and an autofocus fast enough to track moving subjects in low light (tested on a Canon 5D Mk IV) for under $1,000. . thephoblographer.com