"Rejection" inside a non-working lens is not a defect, but a design feature of most Sigmas. Shot examples: link Sigma 60 f2.8 Its pros: -Very sharp. Maximum sharpness from open, and up to f8. Uniform resolution over the entire field of the frame with an open. Almost complete absence of distortion and HA. Subtle vignetting only in the open. Relatively fast autofocus. Solid assembly: Glass and metal, “Made in Japan” is felt in every detail, smooth rotation of the focusing ring, absolute absence of backlash, hood included, “safe” case with a loop for wearing on a belt. Democratic price (in terms of price-quality ratio, one of the leaders of the "E" system) Cons: -Too sharp for facial portraits. Prone to backlighting. Pretty noisy autofocus mechanism (contrary to the assurances of the developers). Bokeh is harsh.
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