This is what I do:
- open blender
- select the border-option
- go to camera view (NUMPAD-0)
- press SHIFT+B
- select the entire view
When I do this I get a black line around my image, 1 pixel wide (saving the image and opening it in for example the Gimp makes it easier to see). So in my 800x600 image, there are only 798x598 pixels that are useful to me.
Did anyone else notice this? Is it a bug, or is there a logical explanation for it?
You might of course wonder why one would use the border option for rendering an entire image, and you are right; it’s of no use. But if you wish to render an image in several parts (e.g. 100 parts each with a size of 80x60) and then stick them together again in a grid of 10x10, you will have a black border around your image. So you will have a discrepancy between that image and an 800x600 image you render with the border-option turned off.
PS: I found this while looking for an answer to this question.