The Equirectangular grid I mentioned a few posts back… Here it is in use.
I don’t have an A1 sized light-box, I do have an A3 one which is far too small for my current project. So I decided to masking tape my grid to the largest window in the house and use the sun as a lightbox.
Why? My equirectangular grid shows all* the lines of perspective involved in a 360x180 2D image. If you stood in a room in which the floor, ceiling and all the walls had perfectly square grid lines painted on them then this equirectangular image is what you could see if every possible view point was layed out in a single 2d view. Its complicated to explain but its fairly simple to understand. This equirectangular grid was made by myself so that I could use it as a grid reference for hand drawing panoramas. Once Ive drawn a scene using this grid as a reference, when the finished scene is processed through panorama software the scene will have the correct perspective.
*There are more lines involved but they aren’t necessary for what I’m drawing.