Pentax K100D User Manual - Page 128

126 Using the 4 Button to Focus on the Subject You can set the camera so that the focusing is not performed when the shutter release button is pressed halfway and is performed when the 4 button is pressed. This is useful when you wish to temporarily use autofocus while using manual focus. Set [Enable AF] in [OK btn when shooting] in the [A Custom Setting] menu. (p.106) OK btn when shooting Confirm Sensitivity Center of AF Point Enable AF Cancel AF AF with shutter release button disabled so AF performed with OK button 5 Only use this function with lenses that are compatible with Quick Shift Focus (lenses with "DA" or "D FA"). • When [Confirm Sensitivity] is selected, press the 4 button to display the currently selected sensitivity in the viewfinder. When [Sensitivity] is set to [AUTO] in the Fn menu, the automatically selected value is displayed. • When [Center of AF Point] is selected, the AF point can be set to the center by pressing the 4 button (Only when [Swtch dst msr pt] is set to S (Select)). • Select [Cancel AF]. \ appears in the viewfinder while the 4 button is pressed. Autofocus does not activate when the shutter release button is pressed. This is useful when you wish to temporarily use manual focus while using autofocus. You can focus using the focus ring and release the shutter while the 4 button is pressed when using a lens compatible with Quick Shift Focus (take your finger off the 4 button to immediately return to AF mode). Function Reference