If we use a little bit of math, mixed in with a fun lego analogy, that means a 4圆 photo would be 1200 dots by 1800 dots. Pictures are printed at 300 DPI by default. Pictures are printed with a measurement called DPI: dots per square inch. Since we’ve talked about some confusing things with a bunch of jargon, let’s recap. Amazingly, that’s the perfect size to fit on a high definition television. When you’re scanning 4圆 photos at 300 DPI-the standard size-you’ll end up with a digital image that’s about 1200 pixels by 1800 pixels. If you know, you know.īut back to resolution talk. In other words, you technically increased the amount of resolution, but it didn’t change anything, because it’s still a block that didn’t increase or decrease in size. It’s also still a block that’s big enough to send a jolt of pain throughout your foot if you find yourself unfortunately stepping on it while aimlessly wandering past your kid’s playroom. If you divide that square into 4, you’ll be left with 4 squares, but they’ll be the same color as the single square was, and the same size.
Because who doesn’t love legos? If you use a bunch of the square legos, we could think of that like one of the dots in the DPI. To think about it a different way, imagine you have a big sheet of legos. It’ll all make sense shortly (fingers crossed). I know it’s confusing, but bear with me here. If you scan the image at more than 300 DPI, you’re trying to get more details out of the image than it has. And as you can imagine, the result may not be as desirable as you’d like. That means if you’re scanning your image at 300 DPI, you’re getting all of the details out of the image that you possibly can. Most printed images are printed at 300 DPI. The way they do that is with little dots. Similar to how digital images use pixels to measure resolution, printed images also have to print somehow. When you scan images, your scanner measures picture quality in DPI, which stands for dots per square inch. Makes sense, right? When we think about an image that small, it seems to make sense that there’s a maximum possible resolution that we can get when we digitally scan them. After all, it’s a physical photo, so it should have physical limitations when digitized, right? That means each picture is four inches tall and six inches wide. The standard size for printed images is 4圆. That’s why this is where things get tricky. Or was it a square peg into a round hole? Doesn’t matter. And like the old saying, it’s tough to fit a round peg into a square hole. That means, to digitize a photo, you have to convert something that’s printed in dots into squares. This is especially weird for printed photos, because they’re printed using dots. That’s because, to turn anything digital, it has to be made out of pixels.
The first strange thing is that you’re taking something (analog), which can be any shape in the world, and you’re turning it into a bunch of little digital squares. Turning things digital from analog is a weird process.
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