User's Manual

Photomatix Pro User Guide 20
Choosing a Lasso
– The Polygonal lasso is ideal for areas with straight sides, and good for large areas (because you don’t have
to hold down the mouse button).
– The Normal lasso is good for areas with curved sides. It’s not the best choice for large areas, because you
have to hold down the mouse button as you drag.
3.7.2 Fitting the Selection to the Area’s Edges
The area to be replaced usually has at least one irregular border (such as the mountains in this
sample photograph). It’s dicult to draw irregular borders exactly, and you don’t have to. You
can draw approximate borders, and Photomatix will t them for you by "nding the edges".
Finding the edges
The borders of the area you want to replace are almost always
at edges — large changes in brightness between adjacent
pixels. In the sample photo, the transition between the light
sky and the darker mountains is an edge.
Selecting the Attach to Edges checkbox causes Photomatix to
search for an edge near the selection path you drew. The selection
path is then redrawn along the edge — in this case, the mountains.
Attach to Edges checkbox
Selection drawn with the lasso tool
Adjusted selection after clicking on "Attach to Edges"