The tracking scale of image targets in version 4 is different from version 3, and it’s only consistent for square targets. This seems to affect tracking quality — we feel that version 3 is more stable, and it also provides the correct representation. We are migrating only because we need support for Android with 16 KB page sizes.
Horizontal target capture: Version 3 on the left, Version 4 on the right

Vertical target capture: Version 3 on the left, Version 4 on the right
