Now, a lot of people who are still familiarizing themselves with this idea think, OK, let's just increase the ppi for that 72ppi image to 300ppi, and problem solved. So that 72 dpi photo that looked great on your monitor is either going to look really bad on paper, or it's going to have to be printed at postage-stamp size in order to make our eyes start seeing it as an image instead of a series of dots. On paper, we need about 300 ppi before we get to this point. On paper, there need to be a lot more pixels per inch before our eyes will stop seeing those individual dots and start interpreting an image as being an image rather than a series of points of color. It's a low-resolution way of displaying images, so when you look at a low-resolution file on screen it looks fine because it's been optimized to be displayed on that low resolution screen.īut print is a higher resolution format. The average LCD computer screen has a resolution of somewhere between 67 – 130ppi. Now, here's the reason why your low resolution images look great on screen, but not on paper. When people talk about "dpi" when discussing image resolution, they mean "ppi." It's not really something you need to be worried about in terms of image resolution, but you may hear it used interchangeably with ppi so I mention it here so you won't get confused. "dpi" stands for "dots per inch," while "ppi" stands for "pixels per inch." "dpi" is an older term, which is supposed to only refer to the number of dots per inch that a printer can lay down on a piece of paper. Now, you may have heard both the term "dpi" and "ppi" used when talking about image resolution, but there is actually an important distinction between the two. Resolution, then just refers to the number of pixels there are in any given photo. Why is that? To understand the answer to that question, you must first understand what exactly "resolution" means.Ī digital photo is basically just a series of very, very small dots, which are called pixels. Low resolution images look great on your computer, even though they'll look terrible in print. And here's the reason why it completely escaped your notice, until you actually had those photos in-hand and the terrible truth was dawning on you. Now, you may or may not have meant to do either one of those things, but that's what happened. Here's what happened: either you shot your photos at a resolution that wasn't compatible with the print size you ordered, or you chose a compression setting when you uploaded the files (that just means that you agreed to upload a smaller version of the file, so the upload time would be less). Have you ever uploaded a batch of photos to your favorite printing service, and then been appalled by what they ended up looking like? Instead of those clear, sharp photos you thought you'd shot, you've got photos that are covered with JPG artifacts-blocky, pixelated-looking areas that make every single shot look like it's not only out of focus, but also occupied by a series of Minecraft characters.
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