Rather than capture an image first on film, then days later scan a print or slide, you simply snap a shutter and connect camera to computer. Within minutes, the photo's on your monitor, ready for printing, editing, or posting on your Web page. Other benefits include greater control over image quality and consumable costs are reduced since film, Polaroids, processing and scanning fees are eliminated. Imagine shooting in the morning and having a color-corrected file ready for the client the same afternoon. It's easily accomplished if you're shooting digital photographs.
Clients can even edit images on-screen during the photo shoot, thus eliminating reshoots.
You also don't need to worry so much about cleaning up dust and adhesive on the backdrop because that can easily be cleaned up with Photoshop after the fact. With conventional photography a number of people and processes are involved in getting a photograph shot to its final use. From the photographer the film must be processed, then scanned to create a digital file. Scanner operators have no reference to the exact colors in the original scene, so results vary according to interpretation. With digital photography you have almost instant feedback as to exposure and color balance.