Resizing an image is one of the most commonly used skills in all of Photoshop. It"s so common, in fact, that even people who know virtually nothing about Photoshop still manage lớn use it lớn resize their images, which should give you an idea of how easy it is to do.
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In this tutorial, we"ll learn how khổng lồ resize images, as well as a general rule to lớn keep in mind so your resized photos remain crisp và sharp. I"ll be using Photoshop CS5 here but the steps are the same with any recent version of the program.
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Here"s an image I have open on my screen:
The original photo.
By enlarging the image, I"ve managed to lớn return it lớn its original size, but when we compare the quality with that of the original, the enlarged version clearly doesn"t look as good. We"ve lost a lot of detail in the image, & it"s starting to look soft and blurry. If I was to lớn enlarge it even further, the image unique would grow progressively worse.
Here"s why. When you use the Image form size command lớn make a photo smaller, Photoshop makes it smaller essentially by throwing away pixels. It just takes some of the pixels from the image & tosses them out the virtual window. Fortunately, Photoshop is really good at knowing which pixels to lớn throw away without sacrificing image quality, so making our images smaller isn"t usually a problem.
The problem comes in when we ask Photoshop to make our images larger. If Photoshop makes them smaller by tossing pixels away, how vị you think it makes them larger? If you answered, "By adding pixels to the image", you"d be right! But here"s the bigger question. Where does Photoshop get these new pixels from that it"s adding to lớn the image? If you answered, "Um, I"m not sure. I guess it just kind of makes them up out of thin air", you"d be right again!
And therein lies the problem. When Photoshop makes an image larger, it has to showroom pixels that were not there before, and since Photoshop wasn"t on the scene when you took the photo, it has no idea what a larger, more detailed version of the image should actually look like, which means it has khổng lồ guess. Of course, Photoshop is a very powerful program & its guesses are based on some very complicated & advanced math, but at the over of the day, it"s still just a guess, & it"s not going to lớn guess correctly. Bottom line, the larger you try to make your image, the worse your image is going khổng lồ look. Instead of the sharp, highly detailed version you were hoping for, you"ll get something that looks dull, soft & blurry.
So again, when resizing your image, it"s okay lớn make your images smaller, but you should avoid making them larger at all cost unless you absolutely don"t care about image quality. & really, who doesn"t care about image quality? That"s just nonsense.