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@ebiggs1 wrote:...DPI is a printing term. DPI, or dots per inch, and PPI, or pixels per inch, both tell us the resolution of an image. However, they're not the same thing. DPI, the printing term refers to the number of physical dots of ink in a printed document.
So many people say “DPI” when they really mean “PPI” constantly, all the time anymore. To make things even worse Apple, Microsoft and Adobe are all guilty of this improper usage. The important thing to know is when someone says DPI, they really mean DPI and not PPI. If you zoom way in on your monitor you will eventually see PPI. Yo can not see DPI until it is printed.
The PPI of your monitor and camera is fixed. They can't be changed.
Well I spent more than a little time trying to make sure I was using the correct terminology in my response. At least I knew I didn't want to use "LPI". 
I decided to use PPI in my reply since my intention was to indicate that making a good quality print requires a certain number of pixels per inch (PPI) of the width and height of the print.
The way I look at it, a camera doesn't have PPI at all. It only creates a file of certain pixel dimensions of no specific size in inches. I guess I may need to still spend some more time wrapping my brain around resolution, pixel dimensions, DPI and the like. 
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