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| underwater_videography_with_gopro [2025/07/27 16:30] – [GoPro specifics] qlyoung | underwater_videography_with_gopro [2025/07/27 16:35] (current) – qlyoung | ||
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| Virtually all EIS systems assume air is the shooting medium by default. This means that when using EIS on footage shot in water, the lens distortion matrix needs to be adjusted to account for the difference in relative refractive index between water and lens. Gyroflow added this option recently and there is a Labs setting (`DIVE=1`) to enable it for Hypersmooth on Hero 12/13. | Virtually all EIS systems assume air is the shooting medium by default. This means that when using EIS on footage shot in water, the lens distortion matrix needs to be adjusted to account for the difference in relative refractive index between water and lens. Gyroflow added this option recently and there is a Labs setting (`DIVE=1`) to enable it for Hypersmooth on Hero 12/13. | ||
| - | Without this adjustment stabilization will still work, just not as | + | Without this adjustment stabilization will still work, just not as well. GoPro Labs docs say that without it, Hypersmooth is about 70% effective compared to shooting in air. |
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| + | To get an idea for the difference, compare the results of distortion correction calibrated for air (left) versus water (right): | ||
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| ### GoPro specifics | ### GoPro specifics | ||
underwater_videography_with_gopro.1753633808.txt.gz · Last modified: by qlyoung
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