viFocus 91Autofocus ............................................................................................... 91Autofocus Mode ..............................................................................91AF-Area Mode...................................................................................93Focus Point Selection.....................................................................96Focus Lock..........................................................................................98Manual Focus ......................................................................................101Release Mode 103Choosing a Release Mode ..............................................................103Power Source and Frame Rate................................................. 104Self-Timer Mode.................................................................................106Mirror up Mode ..................................................................................108ISO Sensitivity 109Manual Adjustment ..........................................................................109Auto ISO Sensitivity Control ..........................................................111Exposure 115Metering ...............................................................................................115Exposure Mode...................................................................................117e: Programmed Auto .................................................................. 118f: Shutter-Priority Auto .............................................................. 119g: Aperture-Priority Auto ........................................................... 120h: Manual......................................................................................... 122Long Time-Exposures.......................................................................124Shutter-Speed and Aperture Lock...............................................126Autoexposure (AE) Lock..................................................................128Exposure Compensation.................................................................130Bracketing ............................................................................................132