371Reduce flicker and banding when shooting under fluorescent ormercury-vapor lighting during live view or movie recording.Choose Auto to allow the camera to automatically choose thecorrect frequency, or manually match the frequency to that ofthe local AC power supply.D Image Dust Off Reference DataThe same reference data can be used forphotographs taken with different lenses orat different apertures. Reference imagescan not be viewed using computer imagingsoftware. A grid pattern is displayed whenreference images are viewed on thecamera.Flicker ReductionG button ➜ B setup menuD Flicker ReductionIf Auto fails to produce the desired results and you are unsure as to thefrequency of the local power supply, test both the 50 and 60 Hz optionsand choose the one that produces the best results. Flicker reductionmay not produce the desired results if the subject is very bright, inwhich case you should try choosing a smaller aperture (higherf-number). To prevent flicker, select mode h and choose a shutterspeed adapted to the frequency of the local power supply: 1/125 s, 1/60 s,or 1/30 s for 60 Hz; 1/100 s, 1/50 s, or 1/25 s for 50 Hz.
