The diffuser is used to create exposures of even density over the entire surface of film and soften harsh shadows, reduce hot spots.
All features of this diffuser :Use the diffuser by placing it flush against the front of the lens and exposing through it. The light that passes through the diffuser and on to the film will create an even density across the surface of the film. Flash straight on if without our diffuser causes the light to go forward only and creates a harsh shadow behind the subject. The flash with our diffuser installed and tilted at 45 degrees gives a nice soft wrap around of light with a soft shadow behind the subject. This fits cleanly over the head of your existing flash, no need for cumbersome attachments. It disperses the light over a wider area for a softer, more balanced and natural effect than you didnt use before. It helps to reduce hard background shadows and eliminates the annoying red eye effect. Compatibility Canon EX 580 Speedlight Canon 380EX flash Canon 550 540EX flash Canon 580EX flash Canon 430EX flash Nikon SB 600 flash Nikon SB 800 flash Canon 420EX flash Canon 580EX II flash All item you get :1 x FOLETO Flash Diffuser for Canon 580EX.