FLIR T4xx series User Manual page 39

13 Handling the camera
2. Rotate the lens counter-clockwise 30° (looking at the front of the lens).
3. Carefully pull out the lens from the bayonet ring.
4. Correctly position the lens cap in front of the bayonet ring.
5. Carefully push the lens cap into position.
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#T559879; r.15723/15723; en-US