I believe that it was money well spent. Simply make an informed decision when you're making a purchase, and pay attention to both the front and rear emphasis. According to the reviews, this lens flawlessly resolves a full-frame matrix with 50 megapixels and produces an image that is of the highest quality. Since the previous version of the lens was also capable of correctly resolving 20 megapixels when used on a full frame camera, it is safe to assume that owners of cropped cameras, which only have 18 megapixels, will not experience any issues with the sharpness of their images.
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