rulesall photographs must be of equal height and width containing a circle.
the circle must fill as much of the frame as possible with its outside edge remaining visible.
no additional borders, no signatures or watermarks, no computer generated circles, no photoshop creations, no burnt out or digitally removed backgrounds, no fabricated circles and no circles created through lens effects.
ideally, all submissions should possess a creative commons license allowing for the creation of derivative works
all submissions must have a minimum resolution of 500x500 pixels but larger is preferable.