From BlenderWiki
hallo any one... in blender 2.6, I cant insert image as background image, and I try with other my computer, and 2 notebook my friends, but always fails, can you help me please....
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On this page, under "Background image > settings > size", relating to the size of the background image, the present document states:
Controls the size, or scale, of the picture in the 3D view (in Blender units).
Since the "size" parameter is a one dimensional value, and the size of the image is most generally two dimensions, it would be more useful to specify the relationship between the size value, and how it relates to the size of the image. Is it a scalar factor which is applied to each of the dimensions of the image, or is some other algorithm applied to derive the one dimensional number from the two dimensions of the image.
--Brasshat 20:34, 16 October 2012 (CEST)
List of valid file types would be nice, I see jpg in the example and I know png works any others?
Stalinvlad 02:23, 3 April 2013 (CEST)