Quote - If you think about it this makes more sense and could be what the poser manual is referring to when it says 1200DPI = extreme detail.

The poser manual is written by a bunch of brain dead monkeys, or so i would state if i didnt like monkeys. If the dpi is making any change (and you should verify this in PS with a difference comparison) it is likely modifying other settings not because of dpi itself.

To a renderer, dpi is meaningless, Firefly (and every other render engine out there) only deal with pixels. They dont understand any real world unit of measurement like inches or anything. All they do is take one pixel in a file, render it out and then move to the next. What printers do with each pixel is where dpi is used.