Nikon D750 Product Manual - Page 408

D Image Sensor Cleaning Dust off reference data recorded before image sensor cleaning is performed can not be used with photographs taken after image sensor cleaning is performed. Select Clean sensor and then start only if the dust off reference data will not be used with existing photographs. D Image Dust Off Reference Data The same reference data can be used for photographs taken with different lenses or at different apertures. Reference images can not be viewed using computer imaging software. A grid pattern is displayed when reference images are viewed on the camera. Flicker Reduction G button ➜ B setup menu Reduce flicker and banding when shooting under fluorescent or mercury-vapor lighting during live view or movie recording. Choose Auto to allow the camera to automatically choose the correct frequency, or manually match the frequency to that of the local AC power supply. A Flicker Reduction If Auto fails to produce the desired results and you are unsure as to the frequency of the local power supply, test both the 50 and 60 Hz options and choose the one that produces the best results. Flicker reduction may not produce the desired results if the subject is very bright, in which case you should try choosing a smaller aperture (higher f-number). 380