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.
(..) That hurts. Sorry. Used your gag. Money from Mr. Chairman. Thank you. I can develop a new project. You're very sharp. You noticed that. That robot performed well at the Gulf. Want to see its performance? Here it comes. Look! Look at that! It's super. (..)2007 Kantoku · Banzai!