Question:

Why does the screen flicker when recording videos indoors using the 'Super Steady' mode or with a short shutter speed in 'Pro Video' mode?

Answer:

The screen flickers due to the interaction between the camera settings and indoor lighting conditions. Fluorescent lights blink at 60 times per second, causing flickering on the video or a black line on the screen. This happens because the camera captures brief moments of illumination that humans cannot perceive.

This issue typically does not occur with three-wavelength fluorescent lights, incandescent lights, or most LED lights. In 'Super Steady' mode, the decreased shutter speed makes the camera more sensitive to flickering. Setting the shutter speed to 1/750 seconds or higher in 'Pro Video' mode may surpass the recommended range for fixing the flicker issue, leading to screen blinking.

In summary:

Flickering occurs due to the blinking of fluorescent lights (60 times per second).

It affects videos recorded indoors with such lighting.

Shorter shutter speeds, used in 'Super Steady' mode or manually selected in 'Pro Video' mode, can exacerbate the flickering effect.

Other light types, like three-wavelength fluorescent lights, incandescent lights, and most LED lights, usually do not cause flickering.