RAW and JPEG: How Cameras Record, Process, and Output Photos

Differences Between RAW and JPEG Saving

Sony describes RAW files as containing uncompressed, unprocessed image data, which preserves the details recorded by the camera's image sensor. Sony's support documentation outlines that digital cameras typically process the sensor output signals to generate JPEGs; RAW allows for post-processing parameter adjustments. Specific implementations vary by model. [G-RJ-01, G-RJ-03]

Post-Processing Space, Software, and Storage

Sony points out that its RAW files usually take up more storage space than JPEG, PNG, BMP, and TIFF files, and require software capable of opening and editing RAW files; actual file size varies randomly depending on shooting settings. Sony’s support article for the ILCE-7RM4 also notes that differences in algorithms used by the camera processing and different versions of RAW editing software may affect sharpness, color, and DRO effects. This is a model-specific example. [G-RJ-02, G-RJ-04]

RAW Options Vary by Camera Model

Sony ILCE-9 Series support articles describe different RAW recording formats in terms of image quality, shooting speed, and development speed, and indicate that supported functions vary by camera. Sony explains that Lossless Compressed RAW can be smaller than Uncompressed RAW files while maintaining the same image quality. This example does not represent menu options for other cameras. [G-RJ-05, G-RJ-06]

Verify Camera and Software Before Choosing

Before choosing a RAW recording method, first confirm which RAW formats your target model supports and their differences in file size, continuous shooting, and development speed; also verify that the software you use can read the corresponding files, and plan for larger storage space. The format description for the Sony ILCE-9 Series is provided only as an example for a specific model and does not replace the manual for other models. [G-RJ-02, G-RJ-05]