Well, he did post in the C4D I Need Help! section. :-)
Without trying to sound condescending, DPI can get very confusing unless you have a graphics and printing background. Keep it simple. You can keep the resolution at 72 and just worry about the total pixel dimensions. Most of us are producing images for digital use, i.e. the web, mobile devices or broadcast. Everything is just pixels. 1920x1080 pixels @ 72 dpi for standard HD here in the U.S. If you are producing images that need to be printed and you're not sure, ASK the vendor that will print your image what the requirements are. They may just give you pixels, but if they give you let's say 8"x10 @ 300dpi, not to worry. You could set C4D to export like that, but I always found it clumsy and in the past has only produced the pixe. Let's translate that size into something that makes sense.
8"x10 @ 300dpi (dots per inch) works out to 8x300 = 2,400 pixels wide by 10x300 = 3,000 pixels tall
Some places may tell you you need to make the image 2400px x 3 000px. Same as saying 8x10 @ 300dpi. See what I'm saying? In the end, it's all just pixels.
