JVC TK-WD310U Instructions - Page 28

Back focus adjustment, the back focus adjustment rings, lock the back focus locking

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CONNECTION/INSTALLATION Back focus adjustment Be sure to make back-focus adjustments when changing the lens mounting method or using a different lens. ● To make accurate back focus adjustments, carry out adjustments in a state where the lens iris is released. To open the lens iris, set MODE in the FOCUS ADJUST menu screen to ON. (੬ Page 27) ● The auto iris lens may operate under extremely bright conditions (7000lx or higher). In this case, use an ND filter to adjust the amount of light. (The ND fiter acts to reduce the amount of incident light entering the lens evenly over the entire wavelength band.) Lens focus ring Back focus adjust ring Phillips screwdriver Back focus locking screws Memo If the iris cable length of the lens is insufficient when turning the back focus adjustment rings, lock the back focus locking screws, turn the lens and loosen the back focus locking screws again for achieving back focus. 22

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22
CONNECTION/INSTALLATION
Back focus adjustment
Be sure to make back-focus adjustments when changing the lens
mounting method or using a different lens.
●
To make accurate back focus adjustments, carry out adjustments
in a state where the lens iris is released.
To open the lens iris, set MODE in the FOCUS ADJUST menu
screen to ON. (
³
Page 27)
●
The auto iris lens may operate under extremely bright condi-
tions (7000lx or higher). In this case, use an ND filter to adjust
the amount of light.
(The ND fiter acts to reduce the amount of incident light enter-
ing the lens evenly over the entire wavelength band.)
Memo
If the iris cable length of the lens is insufficient when turning
the back focus adjustment rings, lock the back focus locking
screws, turn the lens and loosen the back focus locking screws
again for achieving back focus.
Phillips screwdriver
Back focus adjust ring
Lens focus ring
Back focus locking screws