Diagram showing circles of confusion for point source too close, in focus, and too far (drawn in Sodipodi; rasterized to PNG. If you want to edit it, please work from Circle_of_confusion_calculation_diagram.svg) Created by Brion.
from en.wikipedia: Diagram showing circles of confusion for point source too close, in focus, and too far (drawn in Sodipodi; rasterized to PNG. If you want to edit it, please work from Image:Cirles of confusion lens diagram.svg) Created by [[User:B