【Adjustable Carbon Fiber Flags】K&F CONCEPT Mini Matte Box Pro 3680 is designed for mirrorless cameras to prevent sunlight or other light from causing glare and flare and to control images on the screen. The top flag opens 180° and its side wings extend 40° for additional light blocking; The side flag is attached to either the matte box or the filter tray via slots and opens 180° to block stray light. Note: The top flag cannot be closed shut when more than 2 filter trays are installed | 【Modular Design and Easy Installation】This mini matte box is designed with quick release modular and easy installation. It features one knob on top to fix the top flag in place, and one knob on the upper right corner to tighten the camera lens. It also comes with a storage case for quick storage of the matte box and filter trays | 【Versatile and Secure Filter System】The matte box can hold two 4x5.65 inch filters and includes a secure locking mechanism. It supports various filter types. | 【Comprehensive Compatibility】Equipped with 5 adapter rings (67mm, 72mm, 77mm, 82mm, 95mm) to fit most DSLR and mirrorless lenses. It also includes multiple expansion ports (1/4"", 3/8"", cold shoe) for additional accessories. | 【Enhanced User Convenience】Comes with a storage case for easy transport and protection of all components, ensuring hassle-free outdoor shooting. The product is also designed for future expandability with side and rail extension boards. | 【Compatible Note】This matte box kit didn't fit the Sony FE PZ 28-135mm f/4 0ss camera lens.