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Message: <blockquote data-quote="J-see" data-source="post: 405609" data-attributes="member: 31330">It's only when there's a severe and abrupt difference in luminosity levels. Dark part of the bird in the lighter part of the sky. Sharpening seems to do something strange there by turning pixels brighter than their neighboring pixels are.I've been checking photography life in the past and the shots of Nasim Mansurov, who isn't well known for shooting shabby lenses, show the same fringes when the same conditions are met; dark pixels directly next to light pixels on the outline of the bird.Cheaper lenses might have more chromatic aberration but this is something else entirely. They also often appear as an outline on roofs of buildings when you shoot them during a clear blue sky.</blockquote>