Sony α7 IV anti-flicker settings: Anti-flicker Shoot. and Var. Shutter
According to the ILCE-7M4 official Help Guide, Anti-flicker Shoot. and Var. Shutter menus, applicable shooting modes, detection boundaries, and recording result verification are provided; no universal strobe physics, cross-brand settings, fixed shutter speeds, or film shutter angle formulas are provided.
First distinguish between the two functions
Anti-flicker Shoot of α7 IV will automatically detect specific frequencies and select a more suitable shooting moment; Var. Shutter allows users to fine-tune the shutter speed while looking at the monitor. Sony's comparison chart also differentiates between stills/video, shutter type and detectable frequency. 〔G-CAAF-01〕〔G-CAAF-02〕〔G-CAAF-03〕
Open the menu and operate
Go to MENU > Image (Shooting) > Shutter/Silent > Anti-flicker Set. When using Anti-flicker Shoot., press the shutter halfway and confirm the strobe icon before shooting; when using Var. Shutter, turn on the function and adjust the shutter speed while observing the monitor in Var. Shutter Set. 〔G-CAAF-01〕〔G-CAAF-02〕〔G-CAAF-03〕
Pay attention to detection and mode restrictions
Anti-flicker Shoot. only supports still photos, the detection range is limited to 100 Hz / 120 Hz, and the detection may fail or be insufficient under certain light sources or shooting conditions. Var. Shutter can be used for both stills and video, but must be in exposure mode with manual control of shutter speed; Anti-flicker Shoot. uses a mechanical shutter. 〔G-CAAF-02〕〔G-CAAF-04〕
Check actual recording after shooting
Monitor previews may not necessarily accurately reflect the recorded image, especially at faster shutter settings. Sony allows both functions to be used together in mixed-frequency scenarios: turn on Anti-flicker Shoot. and Var. Shutter first, then adjust Var. Shutter Set.; and finally check the recorded image, rather than taking the preview as a guarantee of results. 〔G-CAAF-05〕〔G-CAAF-06〕
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