Apple Aperture 2 - Manual (Page 187)

Chapter 6 Displaying Images in the Viewer 187
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To use the pointer to magnify parts of an image:
m Choose Focus on Cursor from the Loupe pop-up menu.
To turn off this feature, choose Focus on Loupe from the Loupe pop-up menu again.
Changing the Size and Magnification of the Loupe
You can also change the size of the Loupe and increase or decrease its magnification level.
To change the size of the Loupe, do one of the following:
m To decrease the size: Choose View > Loupe Scaling > Decrease Diameter, or press
Shift–Option–Minus Sign (–).
m To increase the size: Choose View > Loupe Scaling > Increase Diameter, or press
Shift-Option–Plus Sign (+).
To change the Loupe’s magnification, do one of the following:
m Choose the magnification level you want from the Loupe pop-up menu.
m Choose View > Loupe Scaling > Increase Zoom, or press Command–Shift–Plus Sign (+),
to increase the Loupe’s magnification.
Press these keys repeatedly to increase magnification more.
Choose Focus on Cursor
from the pop-up menu.
Choose a magnification
level here.