What is the difference between raw format and jpg format?

Difference: RAW is the uncorrected original data, while JPG is an image format that has been modified according to the manufacturer's style, the photographer's settings, etc. RAW format files are larger than JEPG format files; in terms of image quality, RAW format images are better than JEPG format images.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

RAW Introduction

The Chinese explanation of RAW is "raw materials" or "unprocessed things". The RAW file contains all the photo information of the original image file after it is generated by the sensor and before entering the camera image processor. Users can use certain specific software on PC to process RAW format images.

Many image processing software can process RAW files output by the camera. These software provide adjustments to the sharpness, white balance, levels and color of RAW format photos. In addition, because RAW has 12-bit data, you can use software to squeeze photo details from the highlight or dark areas of RAW images that are impossible to find in JPEG or TIFF images with 8 bits per channel.

JPG Introduction

The full name of jpg is JPEG. JPEG images store a single raster image in 24-bit color. JPEG is a platform-independent format that supports the highest level of compression, however, this compression is lossy. Progressive JPEG files support interlacing.

The difference between RAW and JPG

①The file size is different

From the perspective of file size, RAW format files are obviously It is much larger than the JEPG format file, and the size difference between the two is almost 4 times. The author suggests that if you do not have a large-capacity memory card and want to take more photos, it is better to use JEPG format.

②Differences in image quality

RAW format images are more solid than JEPG format images. The clarity and fineness of the image are improved, and the details of the image are improved. The expression is also richer. Precisely because the RAW format records all the information received by the photosensitive element, it will be superior in photo quality compared to the JEPG format file that has undergone "lossy compression".

③Different opening methods

The most common way to process RAW files is to open them with the Camera RAW filter in Photoshop or Lightroom, so that they can be post-processed. After upgrading to Windows 10 system, the system can also directly display previews of some RAW file photos, but cannot process them.

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