Spherical vs equirectangular camera-lens

What’s the difference between the spherical and equirectangular camera-lens option? Their difference isn’t documented at camera-lens — OpenDroneMap 3.0.5 documentation . I don’t know which I should use for equirectangular 360 images I am processing.

The “dual” camera-lens isn’t documented either.

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I’m going to write those up, but I don’t have test data to use for them to illustrate the differences, unfortunately.

Spherical would be for very wide fisheye looking images.

Equirectangular images are transformed to fill the entire frame and look more like regular images in comparison.

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