Nikon D750 Product Manual - Page 493
Image quality, NEF RAW, Active D-Lighting, Built-in AF-assist illuminator
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Page 493 highlights
Can not select focus point: • Unlock focus selector lock (0 127). • Auto-area AF or face-priority AF selected for AF-area mode: choose another mode. • Camera is in playback mode (0 241) or menus are in use (0 292). • Press shutter-release button halfway to start standby timer (0 39). Can not select AF mode: Manual focus selected (0 60, 132). Can not select AF-area mode: Manual focus selected (0 60, 132). Only one shot taken each time shutter-release button is pressed in continuous release mode: Continuous shooting is not available if built-in flash fires (0 184). Image size can not be changed: Image quality set to NEF (RAW) (0 115). Camera is slow to record photos: Turn long exposure noise reduction off (0 317). Noise (bright spots, randomly-spaced bright pixels, fog, or lines) appear in photos: • Choose lower ISO sensitivity or use high ISO noise reduction (0 134, 317). • Shutter speed is slower than 1 s: use long exposure noise reduction (0 317). • Turn Active D-Lighting off to avoid heightening the effects of noise (0 175). AF-assist illuminator does not light: • AF-assist illuminator does not light if AF-C is selected for autofocus mode (0 121) or if continuous-servo autofocus is selected when the camera is in AF-A mode. Choose AF-S. If an option other than auto-area AF is selected for AF-area mode, select center focus point (0 123, 127). • The camera is currently in live view or a movie is being recorded. • Off is selected for Custom Setting a9 (Built-in AF-assist illuminator) (0 332). • Illuminator has turned off automatically. Illuminator may become hot with continued use; wait for it to cool down. 465
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