The Lens Cap 3.9 protects the front part of your Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE lens against dirt, dust, fingerprints and accidental damage. The cap is very durable meaning it can withstand knocks and scrapes, while being easy to fit thanks to the centre pinch mechanism.BenefitsCompatible with the RF-S 3.9mm F3.5 STM DUAL FISHEYE lensProtects the front part of your lens against accidental damage, dirt or fingerprintsConnects easily to your lens with its centre pinch mechanism, and will stay securely in place during travelThe Lens Cap 3.9 protects the front part of your Canon RF-S 3.9mm F3.5 STM DUAL FISHEYE lens against dirt, dust, fingerprints and accidental damage. The cap is very durable meaning it can withstand knocks and scrapes, while being easy to fit thanks to the centre pinch mechanism.BenefitsCompatible with the RF-S 3.9mm F3.5 STM DUAL FISHEYE lensProtects the front part of your lens against accidental damage, dirt or fingerprintsConnects easily to your lens with its