Re: Sundial Trick Photography

[John Carmichael]

Title: Re: Sundial Trick Photography

Bill, I can't remeber which volume it was in either the Compendium or the Bulletin, but there was an article about photographing vertical dials to minimize the perspective distortion. This was done by standing at certain distance from a wall that has a dial of known height.     John   John L. Carmichael Jr. Sundial Sculptures 925 E. Foothills Dr. Tucson Arizona 85718 USA   Tel: 520-696-1709 Email: [EMAIL PROTECTED] Website: <http://www.sundialsculptures.com> ----- Original Message ----- From: Bill Thayer To: Sundial-L Sent: Saturday, October 06, 2001 11:15 AM Subject: Re: Sundial Trick Photography To see an example of what this technique can do, look at the NASS Registry fotos of the Flandrau Heliochronometer, dial # 464, Tucson Arizona. The first foto I took from a ladder. The 2ond foto below it is the exact same foto artificially corrected to compensate for the perspective distortion. The difference is amazing! Yep. I didn't realize this was of interest to the list, else I'da posted a sample of my own; in this case, a mosaic from the now destroyed Old St. Peter's in Rome, too high up on a wall, but... <http://www.ukans.edu/history/index/europe/ancient_rome/E/Gazetteer/Places/Europe/Italy/Lazio/Roma/Rome/churches/S.Maria_in_Cosmedin/interior/Vatican_mosaic.html> which I've modified this morning to show both photos. The result is imperfect, but is still a definite improvement. (Yes, the URI is correct; if you get a garble, it's your e-mail reader. Go to my Rome page, then to churches, then to S. M. in Cosmedin.) -- Bill Thayer LacusCurtius http://www.ukans.edu/history/index/europe/ancient_rome/E/Roman