What's the photo?

Please ask the main question "What is a polaroid photo?" A photo that can be developed immediately.

Polaroid photos are photos that can be developed immediately. Originally introduced by Fuji Company of Japan in 1998, it is called "instant camera", which is very popular because it can get real photos in a short time after shooting. The principle of polaroid photo is to directly convert light into an image, and then print the image on photographic paper through special inkjet technology, so as to realize the effect of instant development. Polaroid photos are full of retro flavor, reminiscent of the past, and have a wide range of usage scenarios, which can be used in various occasions such as travel, parties and anniversaries. Polaroid photos have also become a fashionable cultural symbol, which makes people feel more fun and value in the process of shooting and sharing photos.