Creating High Res Images from Renderings?

[SDS Chris]

I have created renderings in the past for smaller billboards at a property that was being constructed for lease....probably about 72"x48".

I don't remember the DPI I set it for....it wasn't an image that people would stand in front of to view - mostly only passing by in their vehicles, so - it may have only been 150DPI..still very large.

I set the raytrace at the end of the business day, and it finished sometime around noon the next day.

This was back when using PovRay in X1.

Now, the largest I do typically is an 11x17 image at 300DPI - 3300x5100 and that takes a good 6+ hours.