a 'sharp' image/picture/photograph [=an image/picture/photograph in which the small details can be clearly seen]
a 'sharp' break from tradition [=a sudden change from the traditional way of doing things]
A 'sharp-eyed' [='perceptive'] reader will notice the book's repeating themes.
(..) I think I found some trauma on the victim's left ulna. Yes, it is suggestive of a defensive wound. Seems that it's been made by a sharp object, perhaps a large blade. Dr. Edison, may I ask you a question? Of course. I'm curious (..)2015 TvShow: Bones Title: The Promise in the Palace Season: 11 Episode 7
(..) - of chaos and destruction." - Ooh. (all chuckling) "Remember, neither the keenest mind nor the sharpest wit is a match for the truest heart. Each player selects a game piece..." Yeah, yeah, we get it. It's like Monopoly. (..)2009 The Black Waters of Echo's Pond
(..) And on comes Munez. Two months out injured. Five minutes to show his worth. He'll be looking for an early touch and he does well. Munez looking sharp. Immediately into the action. And Munez scores! Now they are heading for the final. What a finish. Let it run with his front foot (..)2007 Goal II: Living the Dream