Sony ARW files capture the full 14-bit dynamic range from Alpha-series sensors like the A7 IV, A7R V, and A7S III, but they require specialized software such as Lightroom, Capture One, or Sony Imaging Edge to view and process. Converting ARW to JPEG produces a universally viewable photograph that can be opened on any device, shared on any platform, and printed at any lab. JPEG is the standard output format for digital photography, balancing excellent visual quality with practical file sizes.
The conversion applies Sony's embedded camera settings — white balance, color matrix, exposure compensation — to the RAW sensor data, performs high-quality demosaicing of the Bayer pattern, and compresses the result using JPEG's DCT-based algorithm. A 42-megapixel A7R III RAW file that occupies 40 MB as ARW compresses to approximately 8-15 MB as a high-quality JPEG, making it practical for web galleries, client delivery, social media, and email.