Nikon Z 50 Reference Manual - Page 440

The full range of shutter speeds is not available: A flash in use. Flash sync speed can be selected using Custom Setting e1 (Flash sync speed); when using compatible flash units, choose 1/200 s (Auto FP) to access the full range of shutter speeds. Focus does not lock when the shutter-release button is pressed halfway: When AF-C is selected for focus mode or AF-A is selected and the camera is shooting using AF-C, focus can be locked by pressing the A (L) button. The focus point cannot be changed: Focus-point selection is unavailable in auto-area AF; choose another AF-area mode. The camera is slow to record photos: Turn long exposure noise reduction off. Photographs and movies do not appear to have the same exposure as the preview shown in the display: To preview the effects of changes to settings that affect exposure and color, select On for Custom Setting d7 (Apply settings to live view). Note that changes to Monitor brightness and Viewfinder brightness have no effect on images recorded with the camera. Flicker or banding appears in movie mode: Select Flicker reduction in the movie shooting menu and choose an option that matches the frequency of the local AC power supply. Bright regions or bands appear in the view through the lens: The shot is being framed under flashing sign, flash, or other light source with brief duration. Smudges appear in photographs: Clean the front and rear lens elements. If the problem persists, clean the image sensor as described in "Cleaning the Image Sensor" (0 444) or consult a Nikon-authorized service representative. 412 Troubleshooting