Greetings from Norfolk (UK) If you want to determine the Nodal points of a lens, you need, ideally, need a nodal slide. This, and the way to use it is described very well in an oldish book I have - Optics The technique of definition by Arthur Cox, pubnlished by The Focal Press. My copy is the 10th edition (1953). If you like to contact me I could probably precis the details - not too long, but more than the group is probably interested in. Richard. r.wrigley@xxxxxxxxxxxxxx "I have yet to see any problem, however complicated, which when looked at in the right way, did not become still more complicated" Poul Anderson ----- Original Message ----- From: "Joseph Chamberlain, DDS" <drjchamberlain@xxxxxxxxxxxxx> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxxxxxx> Sent: Tuesday, December 06, 2005 7:48 AM Subject: Panoramas. > Dear members: > > I am purchasing a special tripod head for panorama shots and have some > questions for the group. > > 1. how can I determine where the nodal point for my lens is ? I have looked > at a few but can't seem to find any kind of imprinted sign that identifies > it (maybe I haven't looked in the right place). > > 2. What would be the ideal lens focal length to be used for a panorama ? > > 3. What is considered the proper overlap between shots for proper assembly > of the panorama and the achievement of the best possible results ? > > 4. I have seen panoramas made with the camera mounted on the tripod in > landscape mode as well as in portrait mode. What is the best one and what > difference exists between the two options ? > > 5. What is the best panorama software to use with the Macintosh ? I am > looking for one that provides some alternatives in terms of image editing to > remove some unwanted image artifacts. > > > Thank you for your help. > > Best regards, > > Joseph Chamberlain > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.362 / Virus Database: 267.13.11/191 - Release Date: 02/12/2005 > > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.362 / Virus Database: 267.13.12/192 - Release Date: 05/12/2005