Spotlight is an incredibly useful tool when it comes to searching for images, but it is only a generally search utility. Deep is an image specific search tool that will be welcomed by digital photographers as it allows for the searching of images in variety of unique ways
As well as searching for images based on filename, it is also possible to home in on images based on their colour palettes. By analysing the colours used in images, it is you have the option of searching for pictures that include particular tones or are a good match for the colours found in another image.
Images can also be searched for based on size, dimensions and shape. Tags can be added to images to get around the limitation of organising files into folders, and this means that searches for images can be performed without being held back by a hierarchical structure.
Deep is powerful, unique and impressive. If you regularly work with images, the tool can make your life a great deal easier and comes highly recommended.