The Viewport Caption PanelThe viewport caption is a useful feature, it allows you to see which perspective you are viewing the model from View Perspective
The view perspective shows which direction you are viewing the model from, this can be Front, Back, Top, Bottom, Left, Right or 3D. Grid Size/Field of View
This value can be used to change the Field of View. Lower numbers restrict the field of view more but can be used for zooming into objects. A larger number will create a rounded lens effect or fish eye effect. Its not common to change this value as the default value of 65 gives an equivalent of the way we see things in the real world. Near
Both the near and far values deal with the 3 dimensional clipping volume. The Near value is the distance from the viewpoint that the scene will begin to be drawn at. To see the effect this has zoom in close to your model and incrementally adjust this value you will see that the parts of the model closest to the viewpoint will disappear or "clip". You will be able to see 'inside' the model where parts have been 'clipped'. If you have programmed any 3D graphics and have had to deal with a camera set up you will be familiar with both the Near and Far values. Far
Whereas near deals with the Z clipping plane closest to the viewpoint this deals with the clipping plane at the farthest point the viewpoint can see to. Therefore decreasing this value and increasing the Near value will create a narrow band of vision. In 3D games popup can occur (especially in driving games) where the Far value has been perhaps too small.
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