I would like to be able to render 8000x8000 or larger with a minimum of 150dpi because I print my work on canvas. I know it would take a long long time to render something this large but it wouldn't be the first time. The fractal program I use lets me go as much as 10,000x10,000 if the calculations are not to advanced. It will glitch sometimes and render twice that but with no AA and I don't have a program I can load a file that large and perform a AA to it to make it smooth. I have the source code for the program but I don't know C+ otherwise I could fix the problem.
The largest file I have is about 960mb and its a bmp file so time to render isn't something I'm worried about.
sorry bub. dpi (dots per inch ) isn't a determining factor, ppi (pixel per inch) is. 150 ppi isn't very high quality ( in terms of photography anyway . 300 ppi is a better choice. )
why would you want a 53" x 53" photo anyway? Even at 300 ppi you are talking about a 26" x 26" photo. ( 2 1/2' x 2 1/2') My semi professional camera at full resolution is only 3504 X 2336 ( magazine quality @ 300 ppi)
Note that ppi AND dpi are related to some degree, but somewhat independent from actual photo size in terms of resolution. A 300 X 300 will look great at 300 ppi, but it would be a pretty small photograph ( 1 inch x 1 inch ) If however you print this ppi on 150 dpi, you are doubling your size to 2 inches ( still small
with less quality)
HOpe this helps. I'll get more info for you if needed.