1. Professional tulip shape design (also known as a "flower" or "petal" shape) allows for greater versatility. 2. Adding a lens hood can help prevent glare - These apertures can appear in the image when a strong light source is outside the frame - Reduces glare - Screw mount: easy to attach and remove 3. Keep exposure level - Protect lens from accidental knocks - Easy-to-use screw mount lens hood screws directly onto lens or filter. 4. Fits all 77mm lenses - Please verify your camera's lens thread size before use. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath the lens cap. This number is always preceded by a "Ø" (diameter) symbol. 5. 77mm DSLR Camera Lens Hood || 77mm Camera Lens Hood Compatible with 77mm Filter Threads Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store