Nikon TC-16 instruction manual Focus Lock Button

(1)Turn the focusing ring of the prime lens clockwise (i.e., while maintain- ing shooting position) until both LED in-focus indicators (••^i light up.

(2)Confirm the position of the distance scale set in Step 2 and the position reset at Step (1).

(3)During autofocus operation, move the distance scale slightly between these two positions in accordance with the camera-to-subject dis- tance, and make the final adjustment with the TC-16 until both LED in-focus indicators {••<) light up.

*fit is also possible for the LED in-focus-impossible warning indicator^ x ) to light up as a result of low subject contrast. For further information, refer to the F3AF camera body's instruction manual.]

FOCUS LOCK BUTTON— —D

Your TC-16 is equipped with a focus lock button (T). Depressing this button during autofocus operation will automatically lock or fix the distance in focus. Autofocus restarts the instant you release the button. To take pictures with the main subject off-center, follow these procedures:

1.First, center the main subject within the viewfinder's central focusing frame.

2.Lightly touch the shutter release button of the F3AF camera body and make sure both LED in-focus indicators (•^O light up; then depress the locus lock button.

3.While holding the focus lock button, recompose the picture, and depress

the shutter release button to take the picture.'

Notes:

1.When the focus lock button is depressed, the F3AF camera body's meter and the DX-1 AF Finder's autofocus detecting system are automatically shut off to save power; you have to lightly touch the camera's shutter release button once more to activate both; even if at times the LED in-focus indi- cators (••*) do not light up, focus stays locked.

2.Sometimes, the LED indication may change after the mirror returns to its original position upon shutter release while the focus lock button is de- pressed; the focus stays locked.

3.The focus stays locked as long as you keep the focus lock button de- pressed; autofocus operation automatically restarts the instant you take your finger off the button.

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