Currently, when you use a 3000x3000 pixels image and zoom into a detail to add the annotation it looks fine at that 100% zoom level. When returning back to full screen, you hardly see the annotations, because line width is so small.
The request from Delaware for multiple customers (Husqvarna, Oticon,...) is for the annotation size to adapt to zoom level, and not be a fixed nr. of pixels.
Customer support service by UserEcho