✓There is a universal 1/4 inch bracket on the adapter which allows you to mount the projector directly on the light stand, which helps to stabilize the light angle and avoid tilting due to weight. It is more suitable for portrait photography or product photography. ✓Godox AK-R21 kit comes with a 65mm lens that is precision built to eliminate chromatic aberrations from the center to the edges, and it projects sharp shapes and vivid images. There are also two optional lenses (sold separately) with focal lengths of 50 mm and 83 mm for your choice. ✓Whether you prefer an abstract or realistic style of photography, you can simply turn the barrel to get a sharper or blurrier projection and get the effect you want. This will give you a lot of inspiration. ✓With 60 transparencies ranging from stunning landscapes to outer space, from vintage country style to cyberpunk ambiance, this kit is the ultimate exploration of lighting possibilities. ✓AK-R21 with AK-R25 Kit is compatible for Godox AD100, AD100Pro, AD200, AD200Pro, TT685II, V860III, V850III, V1 Flash.