High-Frequency Flicker Reduction
G button U C photo shooting menu
Selecting [On (shutter speed fine-tuning)] allows shutter speeds between ¹⁄₈₀₀₀ and ¹⁄₃₀ s to be adjusted in smaller increments in modes S and M, letting speeds that keep flicker to a minimum be found by viewing the preview in the shooting display.
Flicker may cause banding in pictures taken under high-frequency LED lighting or in shots that include monitors with high-frequency LED displays. Reducing the size of the increments used for shutter-speed selection helps in identifying speeds that keep flicker to a minimum.
- After choosing a shutter speed suited to your subject, enable high-frequency flicker reduction and fine-tune shutter speed while viewing your subject in the shooting display until you find a value that minimizes flicker and banding. The effect can be more readily ascertained by zooming in on your subject using display zoom.
When high-frequency flicker reduction is enabled, the shutter speed display shows only the denominator, with a digit added after the decimal point.
- The precise shutter speed is shown. For example, the shutter speed when ¹⁄₅₀₀ s is selected is precisely ¹⁄₅₁₂ s, which the display shows as “512.0”, the denominator.
- Turning high-frequency flicker reduction off returns shutter speed to the nearest of the values normally displayed.
Cautions: High-Frequency Flicker Reduction
- The effects of flicker in the shooting display may differ from those seen in photographs. We recommend that you take test shots to identify the shutter speed that minimizes flicker and banding.
- Exposure maintenance is disabled while high-frequency flicker reduction is in effect, even when [Shutter speed] is selected for Custom Setting b7 [Keep exp. when f/changes].
Using “Recall Shooting Functions” with High-Frequency Flicker Reduction
Selecting [Save current settings] for Custom Setting f2 [Custom controls (shooting)] > [Recall shooting functions] or [Recall shooting functions (hold)] while high-frequency flicker reduction is in effect saves the shutter speed currently selected via fine-tuning. This allows you to, for example, identify and save the shutter speed that minimizes striping in a high-frequency LED display and then instantly recall the stored value using the selected button only when the LED display is in the frame.