Nikon 9622 D700 User's Manual - Page 313

a4: Focus Tracking with Lock-On This option controls how autofocus adjusts to sudden large changes in the distance to the subject. Option Description C Long When the distance to the subject changes abruptly, the D Normal (default) camera waits for the specified period (long, normal, or short) before adjusting the distance to the subject. This E Short prevents the camera from refocusing when the subject is briefly obscured by objects passing through the frame. The camera immediately adjusts focus when the distance Off to the subject changes. Use when photographing a series of subjects at varying distances in quick succession. a5: AF Activation This option controls whether both the shutter-release button and the B button can be used to initiate autofocus, or whether autofocus is only initiated when the B button is pressed. Option Description Shutter/ AF-ON (default) Autofocus can be performed with the B button or by pressing the shutter-release button halfway. AF-ON only Autofocus can only be performed using the B button. U 287