The button Image and Movie Clip indicate of course if you use a Image or a Movie. The Axis menu indicate in what views you could see the image. The check box left to the title indicate if you can see the image or not. Once you start tracing the image you won't be using the size or offset setting. Now scroll the view using by clicking and dragging the SHIFT MMB and notice how the cube and image move together? As you change the offset values the cube you added earlier won't move. Like the size, these offset values are independent of the view. These settings can be useful if you need to reposition the image from the default position. These controls move the image up and down (Y) or left and right (X). The final row controls the X and Y offset for the image. Notice how the image changes size but the cube doesn't? Now press NUM+ and NUM- to change the view's zoom. Now watch both the cube and image as you change the size. To see how the size works move the default cube off to the side so that you can see both the cube, the background dialog and the background image. This size setting is independent of the zoom for the 3D view window. The fifth line, size, controls the size of the image. For now, play around with it, see how it changes the image, and put it back to the 0.500 default. The use of the blend function will become obvious once we start tracing our logo. You can adjust it by clicking left or right of the knob for gradual changes, clicking and dragging on the slider for rough settings or clicking directly on the blend text for numeric entry. A setting of 0 is completely solid and 1 is completely transparent. The fourth line, labeled blend controls the transparency of the background image with a slider. The third row is called Texture and will not be used for this tutorial. Version 2.43 is the same with the addition of the button that refreshes the image or movie, and the button which shows the number of users of the image block. The button removes the current background image.
Selecting it now will display the image you currently have selected.) The text box allows typing in the file directly. The 2nd button is for selecting an image from a history list. The first button is used for browsing for an image. There are 2 buttons, a text box, and a final button. Image selection is controlled on the row labeled. In v2.43 the equivalent button is the button. When you turn the button on again, your previous settings are back. Turning the button off will not clear the settings it just hides the image. The is a toggle button that turns display of the image on or off. Details of the background image panel Edit