It’s easy to shrink or enlarge your logo / watermark for your 360 photo or video. Here’s how.
To change the size of the logo, all you have to do is adjust its height, using Photoshop or other image editors:
This works for logos of any shape, whether circular, square, or some other shape.
The resulting logo becomes larger or smaller in proportion to how much you adjusted the height. If you decreased the height by 50%, the length and width of the logo (or its diameter for a circular logo) will each shrink by 50%. Note that a 50% reduction in height makes the logo 1/4th as large as it was before. Vice-versa if you enlarge the height.
Using this technique, you can also adjust the size of the logo to cover the tripod legs (or your hand) exactly, without making it too large or too small.
Here are samples:
With large logo:
With small logo: