In the lessons so far, when you looked
            at an object from the top, front, or side views you have been viewing
            the scene through an orthographic view. Orthographic
            views appear two-dimensional because the object is displayed using parallel
            projections of only two axes at a time. (Scooter images courtesy
               of The Art of Maya)
         When
            you view the scene through the perspective view, you are viewing
            the scene in a three-dimensional manner. The perspective view simulates
            what your scene would look like from a camera’s point of view.
         
         In Maya, you view the
            scene through a set of virtual cameras. These cameras are either
            orthographic or perspective in nature. You can adjust how these cameras
            view the scene using the Camera Tools.
         
         The three primary methods
            for manipulating the camera view are dolly, tumble,
            and track.
         
         Dolly Tool
            The Dolly
                  Tool gets its name from filmmaking where a camera, mounted
               on a wheeled tripod, is moved towards or away from the scene. In
               Maya, dollying allows you to view the items in your scene either
               close up or from further back.
            
            To dolly the perspective view
            
            
               - Enlarge the scene view to a single perspective
                  view.
               
 
               - Do one of the following:
                  
                     - (Windows & Linux) Press the Alt key
                        and drag the mouse to the right while holding down the right button
                        on your mouse.
                     
 
                     - (Mac OS X) Press the Option key and drag
                        the mouse to the right while holding down the right button on your
                        mouse.
                     
 
                  
                
               - To dolly the camera outwards from the
                  subject in the scene you can perform the same key and mouse combinations
                  as described above but drag the mouse to the left.
                  
Dolly works in both the
                     perspective and orthographic views.
                  
                  TipIf you make an error
                        when adjusting your camera view of the scene, you can reset the
                        camera to its default home setting.
                        
To reset the camera view
                           for a particular orthographic or perspective view:
                        
                        From the panel menu,
                           select View > Default Home.
                        
                      
                   
                
            
          
         Tumble Tool
            The Tumble
                  Tool allows you to tumble or rotate the camera’s view
               around a particular center of interest to achieve either a higher
               or lower vantage point, or a different side angle.
            
            To tumble the perspective view
            
            
               - Press the Alt key (Windows & Linux)
                  or the Option key (Mac OS X) and drag the mouse either left or right,
                  or up or down, while holding down the left button on your mouse.
                  
Tumbling the view revolves
                     the camera around the center of the scene view, in whichever direction
                     you drag (left, right, up or down). The Tumble Tool does
                     not work in the orthographic views.
                  
                
            
          
         Track Tool
            The Track
                  Tool allows you to move the camera up, down, or sideways
               in relation to the scene.
            
            To track the perspective view
            
            
               - Press the Alt key (Windows & Linux)
                  or the Option key (Mac OS X) and drag the mouse in any direction,
                  while holding down the middle button on your mouse.
                  
The Track
                        Tool works for both orthographic and perspective views.
                  
                  NoteEven though the objects
                        appear to move across the screen when operating any of these camera
                        tools, it is the viewing camera that is actually moved in relation
                        to the scene, not the objects.