Change the transparency of a group

If you increase the transparency of the group, all contained objects appear more transparent, but their own transparency property values don't change. If you change their transparency values, it is in relation to the transparency level of the group.

For example, if you add an element with 80 percent transparency to a group, and then apply 50 percent transparency to the group, the element appears to have 90 percent transparency.

This is calculated as follows:

1 - (1 - 0.8) * (1 - 0.5) = 0.9

The transparency property values, however, stay unchanged at 80 percent for the element and 50 percent for the group.