Action-cam shutter exception

The 180-degree-shutter-rule inverts on action cams, and the archive has both halves of the argument.

Why it breaks: action cams stabilize digitally — they record a larger frame and crop in, which requires sharp, trackable edges between frames. At 1/50 on a moving bike there is so much motion blur that the algorithm can't recognize the image, and the output comes back shaky. The blur that reads as cinematic on a gimbal is exactly what starves RockSteady.

The fix (philip-carneiro, dji-osmo-action-6): lock the shutter at 1/200 for all riding and control exposure with ND filters instead. Set it once and don't touch it mid-ride — he lost a run of shots in the tutorial itself by dropping to 1/50 for one static curve shot and forgetting to switch back.

The other half: gerrit-knein teaches 4K24 @ 1/50 + ND on the dji-osmo-pocket-4p — and he's right, because a 3-axis gimbal supplies the stabilization mechanically, so the sensor never needs sharp edges to do it in software. The rule to carry forward isn't a shutter number, it's: match the shutter to how the shot is stabilized, mechanically or digitally.

Sources: Philip Carneiro / Action 6, Gerrit Knein / Pocket 4P