252 A Custom Settings: Fine-Tuning Camera SettingsSelect the increments used when making adjustments to shutterspeed, aperture, exposure and flash compensation, andbracketing.Select On to display ISO sensitivity in the viewfinder in place ofthe number of exposures remaining.If On is selected, exposure will lock when the shutter-releasebutton is pressed halfway.b: Exposureb1: EV Steps for Exposure CntrlG button ➜ A Custom Settings menub2: ISO DisplayG button ➜ A Custom Settings menuc: Timers/AE Lockc1: Shutter-Release Button AE-LG button ➜ A Custom Settings menu