How to calculate the fov value to zooming out to see the whole image? [FLAT PANO]

  • In most cases, setting limitview=fullrange and fov=1 will display the whole image normally

    but when the stage is small or the image height more than width, setting fov to 1 will not display the whole image and I need to set a value larger than 1.

    How do I calculate this value to display the whole image in all cases?

    Thanks

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