What's the difference between img and raw

IMG and RAW are image file formats, and they have some differences when storing images.

First of all, IMG is a common image file format, which is usually used to store compressed and processed images. IMG files are usually small and suitable for sharing and transmitting images on the network. It can contain many image formats, such as JPEG, PNG and so on, and can be compressed without losing too much image quality.

RAW is an uncompressed and unprocessed original image file format. It records the original image data captured by the camera sensor, which contains more image details and color information. Raw files without any processing are usually large, so more storage space is needed. At the same time, because it is not compressed, RAW files also retain more dynamic range of images, which makes post-processing and adjustment more flexible.

The main difference lies in image processing and flexibility. IMG files are compressed and suitable for direct viewing and enjoyment, but post-processing may be limited by compression loss and reduction of image details. Although the RAW file occupies more storage space, it provides greater flexibility, allows more detailed image processing, adjustment and editing, and retains more image details and color information.

It should be noted that different camera brands and models may have different RAW formats, so when using RAW files, it is necessary to ensure that there are corresponding software or tools to process them and convert them into other commonly used image formats. At the same time, because RAW file is not a directly visible image format, it needs professional software for post-processing and conversion, so IMG format may be more convenient and practical for ordinary users.

To sum up, IMG is a compressed image file format, which is suitable for direct viewing and enjoyment. RAW is an uncompressed and unprocessed original image file format, which provides greater flexibility and the possibility of post-processing.