Allied Vision S-4.1-F3-5MP-T1-2.5 User Manual - Page 20

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Damage to lens threads and fixing nut by excessive force

If the fixing nut is screwed with too much force, threads are worn out and the lens

cannot be locked anymore.

Screw fixing nuts hand tight to keep the lens in a fix position.

Locking focus

Pinch nose pliers are used to screw the fixing nut:

4. Holding the lens in position with one hand, screw the

fixing nut clockwise against the lens mount until you

feel the lens is locked.

Checking focus is set and locked properly

5. Check No.1:

Try to rotate the lens with little force in both

directions to ensure the lens is safely locked in

position.

6. Check No. 2:

The S-Mount thread allows a slightly tilted lens position. In this case, the focus for a common object

plane varies over the image plane.

If the focus is constant over the image plane, you are done.

If the focus varies over the image plane, the lens is tilted. Continue with

7. Loosen the fixing nut.

8. Continue with

The lens is locked in focus and ready for operation.

S-Mount Lenses User Guide V1.1.0

Using S-Mount lenses

NOTICE

Figure 7: Locking the fixing nut

Figure 8: Checking lens is safely locked