About the product                  

                    Sigma LC735-01 Cover Lens Cap provides protection from moisture and dust, this lens cap is compatible with the Sigma 15mm F2.8 EX DG Diagonal Fisheye and 8-16mm F4.5-5.6 DC HSM Lenses.                    
Key features                    
Protection from dust and moisture                    
For Sigma 15mm F2.8 EX DG Diagonal Fisheye and 8-16mm F4.5-5.6 DC HSM Lenses