What is the difference between resolution and dpi ? | NotebookReview
PPI (Pixels Per Inch) refers display resolution, or, how many been for many years that images should be saved with a resolution of 72 PPI. A2A: Screen clarity is not a well defined term. I will suggest that a reasonable way to interpret it is in terms of the amount of detail you can perceive in the picture. wheras resolution is the actual number of pixels on the screen, dpi is a physical size of dots -the higher the resolution, the greater the clarity.
These are also the smallest addressable unit of a digital image. But this fact is not directly relevant to designers. If you see this, ignore it! It is an annoying misuse of terms and probably an attempt to overcharge you.
BruceTurner via flickr ; iPad 4: Hence, the number of pixels per inch PPI on your screen is a fixed quantity — not something you can adjust by typing in a new number somewhere.
Most LCD monitors are in the neighborhood of 67 — ppi. Wikipedia What does this mean? A 72ppi image and a 3,ppi image will appear exactly the same on screen.
What is the difference between resolution and dpi ?
What you need to understand: In the printing process, all the physical pixels that composed the image on screen are translated into little squares of different hues on paper. And how do you increase or decrease print-out size in this way?
Suppose you have a x pixel image. If you set the PPI to 10, this is going to make the print out relatively large: If you set the PPI tothis is going to make the print out relatively small: Think of the PPI input as a way to adjust the physical size — not the resolution — of the eventual print-out.
Decreasing the PPI, thus increasing the size of the printout, may seem to produce a lower quality image because the pixels are larger and more visible. But remember, this is only a relative gauge of quality; if you were to stand further away, the image would appear as clear as it did before.
The screen resolution tells you how many pixels your screen can display horizontally and vertically. It's written in the form x In this example, the screen can show 1, pixels horizontally, and vertically. Different sizes, same screen resolution Now it starts getting a little more complicated.
Screens that are different sizes can still have the same screen resolution. For instance, your laptop could have a 13" screen with a resolution of x And you could have a 17" monitor on your desk with the same x resolution. In this example, although the monitor on your desk is larger, you won't actually be able to fit anything extra onto it.
PPI vs. DPI: what's the difference?
The total number of pixels is the same - just everything looks a bit bigger: This means that choosing the right screen means you have to take note of both the screen's size and its resolution. What higher resolution means If you're comparing two screens of the same size but with different resolutions, the screen with the higher resolution that's the one with more pixels will be able to show you more of what you're working on, so you don't have to scroll so much.
Because that screen has more pixels, the image will be sharper. However, the higher resolution also means that elements on the screen - like icons and text - will look smaller.
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