As descried in
Lesson 2, you can use the built-in crop tool to select 
any desired portion of an image. Drag any of the 8 cropping handles to resize 
the selected portion (
). 
The blue-tinted portion (
) 
will be removed. At the right are other advanced controls, described below.

Control the Aspect Ratio
By default, you can freely drag 
the cropping handles to select arbitrary size of image. It is recommended that the source images should have the same aspect 
ratio to avoid image distortion. The simplest method is to choose the same 
aspect ration from the Aspect Ratio Box (
) 
by cropping each source image. Note, if you have previously set the movie size, 
"Match to movie" is the best choice. The Landscape and the 
Portrait options will cause the aspect ratio to be reversed when cropping 
takes place.

Rotate, Flip
Rotating is useful for aligning 
some digital camera images. Flipping may create a desired effect, and may also 
be used to bring images into closer alignment. Use the Rotate and 
Flip Switches (
) 
to perform these actions.
Options
Here are three options in the Options (
) 
frame.
Info about Size
You can see info about the 
original image size and current cropped size in the Size Frame (
).
Remarks