Originally a Photoshop file format plug-in, Adobe Camera Raw (ACR) has evolved into an essential tool for processing digital camera Raw image files. Raw processing is versatile and necessary for image quality control, workflow ease, and efficiency. It provides a powerful method for working with all aspects of digital capture. In fact, new versions of ACR can be used to reprocess legacy Raw files. A Raw file is the digital equivalent of a film latent image that hasn’t been developed. As the software improves, the processing can improve. There is no analogue to this amazing technology in traditional (film-based/wet darkroom) photography. Check the Adobe website for ACR updates regularly.