"focus"的定义和意义

What is "focus"?

Focus in photography refers to the clarity and sharpness of an image, achieved by adjusting the lens so that the subject is sharp and detailed. When a subject is in focus, light rays come together accurately on the camera sensor or film, creating a clear image. Proper focus ensures that the subject is well-defined, while areas outside the focus may appear blurred. Adjusting focus is crucial for highlighting specific details and achieving the desired depth of field in a photograph.

What is "focus"?

Focus refers to the emphasis or importance given to a specific part of a sentence or conversation. It highlights which element is most relevant or noteworthy, helping to convey the main idea clearly. For example, in the sentence "It was John who broke the vase," the focus is on "John," indicating that he is the significant subject in this context. Focus can change depending on what the speaker wants to stress, making it a vital aspect of effective communication by guiding the listener's attention to essential information.