Image: Image is the picture which are saved in electronic form in our phone's gallery. For instance, any picture file in your computer.

A saved drawing by using Microsoft Paint software is an image but not a photo.

Image also means a kind of behavior or impression a person presents to the public.

Image通常指的是電子圖片。比如存儲在我們計算機、數碼相機、智能手機裡的照片、圖片。Image也用於描述一個人展示給他人的行為舉止或印象。

Photo: Photo is a short form of photography. It is from the word Photo (light) + graph (instrument for recording). Basically, photos are those pictures which are captured via camera.

If a camera shoot is printed, it is a photo not an image.

Photo單詞是photography的簡寫。是由兩個單詞photo(代表光線)與graph(記錄設備)組合而成。因此，photo特指用相機拍照這種方式獲取的圖像。通常特指相機拍攝後洗出來的照片。

Picture: Pictures are the paintings or drawings of anything created by humans, which is a broad and generic word used to define any visual representation of anything.

When someone says "draw me a picture" they might want you use pencil and paper to create a portrait(肖像) for them.

A paper drawing is a picture but not a photo or an image.

Picture是指各式各樣的人類創造出來的繪畫，適用范圍廣。強調的是人類通過自己的勞動(比如使用鉛筆在紙上作畫)創造出來的，而不是利用科技制造出來的“畫”。

英語單詞Image, Photo, Picture的區別