
Originally Posted by
Dennis Bishop
Lines or elements exiting at the corner . . . I've seen the advice not to do that, but I'm not sure it was accompanied by an explanation. (Could be it was but I've forgotten.) Anyway, here's my guess about the reason. If the viewer's eye is following the line and nothing stops it, it's likely to leave the image. Vignettes and other things in the image -- be they elements, tones, or whatever -- can divert the viewer's attention and keep them in the image. I wonder if the edge of the image can do that to some extent, as well, depending on its level of contrast with the rest of the page online or a mat or frame. If my eye has moved to the corner, the little that's left of the two edges forms an arrowhead that's also pointing out of the image. On the other hand, if the line exits at some distance from the corner, the edge is opposing the line of travel to some extent rather than working with it. That's my guess.