I am just starting out taking photography seriously as a hobby (though I've been taking photos for years). When it come to talking about photos it would be useful to be able to describe where you are on the photo. The 'rule of thirds' is a good guide (and the tutorial on this site excellent), but do the points of intersection have names? I've not been able to find anything with a quick internet search and so come up with the following for my own use:
Dividing a photo into thirds and then include the mid points (ie sixths), so, including the edges that is seven lines - doingthe same horizontally and vertically results in 49 points on the photo that can be named (sufficient resolution for me). Starting in the bottom left hand corner I'd label the vertical axis 1, 12, 2, 23, 3, 34, 4 and the horizontal axis a, ab, b, bc, c, cd, d. This means that the four key points (where the thirds intersect) and 2c, 3c, 2d, 3d. I'd be interested to know if there is an accepted system, or anyone has another (better) one.
Graham