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If you're a digital SLR lover or you have one, you may feel it is difficult to find your lens cap even lose it. This product will give you a new solution to reserve the lens cap. We use the principle of three force points to fix the lens cap that users can push the lens cap into the slot by one hand. The small hook inside can lock the lens cap's fringe slot. And you can push the red button to free the lens cap. The hidden spring is created for insuring the hook's function, while two rubber snaps on the back have enough friction force for fastening on the belt of the digital SLR.
Hao Li, Kaiyue Li, Simin Lin, Yang Liu