Adobe Photoshop CC 2014 v.14.xx - Manual (Page 189)

Choose View > Zoom In or View >Zoom Out. The Zoom In or Zoom Out command becomes unavailable when the maximum image
magnification or reduction is reached.
Set the zoom level at the lower left corner of the document window or in the Navigator panel.
Display images at 100%
A zoom setting of 100% provides the most accurate view, because each image pixel is displayed by one monitor pixel. (At other zoom settings,
image pixels are interpolated to a different amount of monitor pixels.)
Do one of the following:
Double-click the Zoom tool in the toolbox.
(Creative Cloud) Choose View > 100% or, click 100% in either the Zoom tool or Hand tool options bar.
Choose View > Actual Pixels or, click Actual Pixels in either the Zoom tool or Hand tool options bar.
Enter 100% in the Status Bar and press Enter (Windows) or Return (Mac OS).
The 100% view of an image displays an image as it will appear in a web browser (at the current monitor resolution).
Zoom continuously
To zoom continuously, your video card must support OpenGL, and Animated Zoom must be selected in the General preferences.
Select the Zoom tool, and then do any of the following:
Click and hold in the image to zoom in. Press Alt (Windows) or Option (Mac OS) to zoom out.
In the options bar, select Scrubby Zoom. Then drag to the left in the image to zoom out, or to the right to zoom in.
Magnify a specific area
1. Select the Zoom tool.
2. Drag over the part of the image that you want to magnify.
Dragging the Zoom tool to magnify the view of an image
The area inside the zoom marquee is displayed at the highest possible magnification. To move the marquee around the artwork in
Photoshop, begin dragging a marquee and then hold down the spacebar.
Temporarily zoom an image
182