Umbrellas are the backbone of many photographers Toolboxes, and understandably so. Umbrellas are affordable, easy to work with and very easy to transport. But Profoto umbrellas are not just average umbrellas. Made with high-quality fabrics and surface-treated metallic elements, Profoto umbrellas provide a superior light and last for many years.Profoto deep white umbrella (large, 51") has a deeper, more parabolic shape than the average umbrella. The deeper shape gives the photographer better control of the light spread. It also allows the photographer to focus and shape light by simply sliding the umbrella shaft in its holder. In addition, the strong Glass fiber rods make the umbrella deep remarkably reliable and sturdy. The white versions create an even, diffused light with soft shadows, and the closer The umbrella is placed to the subject, The softer the shadows will be.Features: large light source that creates a soft and even light spread.Deeper shape for better control and precise light shaping.16 glass fiber rods for a rounder shape and a more even light spread.Heat resistant, high-quality materials.Surface treated metallic elements to prevent rust and discoloration.Optional diffuser available for a softer, more even light spread.Delivered with a high-quality bag that protects the umbrella during storage and transport.