Im a bit new to latex, I thought when adding images they were scaled according to some universal default dpi--today I learned this isn't really the case. So I have a few questions regarding images and dpi:
Is there a default dpi value for document classes or for file types?
Does latex's 'dpi' resolution setting affect anything if no images are present?
Does it matter if images have different dpi settings? (is there some convention or something)
Shouldn't it be called ppi instead of dpi?