Features: Plastic material, fine workmanship, the material is suitable for light transmission, and the most important thing is that it will not make the flash color cast! Just put it on the flash when using, especially suitable for portrait fill light shooting in sunny days, news photography, macro photography of scenery, etc. No adjustments are required other than the maximum distance minus a factor of 2.5. Except in TTL mode, don'for t use the diffuser in the normal direct overhead position. For best results a 45 degree slope should be used. The film is transparent in for time course. Under a certain thickness, the molecule appear in a lattice arrangement, so that the light is scattered and translucent. The temperature resistance is 130 degrees, and it has excellent flexibility. Product function: It can make the flash become soft and uniform through diffuse reflection, and weaken the shadow of the object being shot due to the light. Make photos look more natural. Through the high temperature resistant translucent plastic, it is transformed into soft diffused light, which eliminates the high light spots on the portrait, making your photos beautiful and natural. Specifications: Material: Plastic Size: Approx. 5.4x16.5x0.85cm/2.13x6.5x0.33in for CANON600EX-RT Flash Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Flash Diffuser