posted
That's why I ask. I was reading digital graphics & they said some software says dpi when it means ,PPI. Just trying to find out if this is one of those cases. Thanks!
-------------------- Felix Marcano PuertoRicoSigns.Com Luquillo, PR
Work hard, party like a tourist! Posts: 2274 | From: Luquillo, Puerto Rico, USA | Registered: Nov 2000
| IP: Logged |
What really is happening is SPI, or Samples Per Inch. This is what a scanner or digital camera do, they “sample” the image or data. It can not determine the PPI or DPI of the image since those have to do with display and output, something scanners and cameras do not do. This is what happens when “marketing folks” do their jobs without understanding what is really happening. And once the genie gets out of the bottle, it becomes more difficult to get him/her back in with each passing day.
Try asking a factory rep at a computer show about SPI (if researching scanner hardware and software). If you get a blank stare, move on. If the rep understands the term, listen very carefully to what they say.
PPI, or Pixles Per Inch has to do with video display. This is determined by the size of the monitor and the resolution setting of the display adapter (video card). You can tell someone knows something about “PPI/resolution” when they chuckle when someone that doesn’t understand PPI/resolution says “make a web image 72dpi cause that all it can display.”
DPI, or Dots Per Inch has to do with printed material. Often times LPI, or Lines Per Inch enters the conversation when talking with screen printers or product type folks. This is the “frequency” of the dot pattern in a screen.
Again, thank a few select marketing people for the perpetual “confusion” of using incorrect terminology.
-------------------- Bob Gilliland InKnowVative Communications Harrisburg PA, USA
"The U.S. Constitution doesn't guarantee happiness, only the pursuit of it. You have to catch up with it yourself." Benjamin Franklin Posts: 642 | From: Harrisburg, PA, USA | Registered: Nov 1998
| IP: Logged |
Printer-friendly view of this topic