focus

noun:the point at which rays of light, heat, or other radiation meet
- She adjusted the microscope until the specimen was in sharp focus.
noun:the center of interest, activity, or attention; a focal point
- The new museum exhibit quickly became the focus of the city's cultural scene.
noun:a state of concentrated attention or effort; the act of concentrating on a particular task or idea
- During meditation, he tried to maintain his focus on his breathing.
verb:to adjust a lens, telescope, camera, etc., so that an image is clear and sharp
- The photographer had to focus the camera before taking the portrait.
verb:to direct one's attention or effort toward something; to concentrate
- She needs to focus on her studies if she wants to pass the exam.