It completely depends on why you are making the print. To make money, or render a scene with some intent with regard to perspective. At any rate, it only matters if you want to also include a list of lighting conditions that it need to be viewed under, a complete diet to be observed pre viewing and all other sensory experiences. Jeeze. It's a print. It might hang in different place or it may only sit in a drawer out of the light except on rare occasion when a viewing is possible. All the science is great about how to control the perspective from beginning to end. In the end, does it really matter? How many prints are delivered with a check list of how high to hang it, how much and what type of light it's intended to be viewed under? And even still, how many more are viewed that way? Eric Neilsen 4101 Commerce Street, Suite 9 Dallas, TX 75226 214-827-8301 www.ericneilsenphotography.com SKYPE ejprinter ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.