The actual quality resolution of the image within the file itself is not affected when its DPI value is adjusted. The DPI value is read by some devices such as printers to determine how your image should be presented on a medium such as paper. The printer would then output a larger number of dots for every inch, resulting in a sharper image. However, it is much simpler to change the DPI of an image using the tool provided above.
Contact Us. If you happen to have any comments, suggestions or feedback. This is great quality for photographs, and it's questionable how much extra detail the human eye can even discern beyond that level. But if your image is too small to print at dpi, don't worry. The intended viewing distance of the print plays a large role in what resolution you need. For images you'll hold in your hands, like photos, leaflets, or magazines, dpi or higher is the target, but will do at a push.
With posters or pictures you're going to frame, you can get away with a lower resolution because you'll mostly be looking at them from a few feet away. This also applies when you're printing on different materials, like canvas. And so on. The further away you intend to look at your image, the lower you can set the resolution. A billboard poster designed to be seen from across the street might be printed at as low as 20 dots per inch.
It's also important to note that these rules only apply to photos and raster images. If you're doing graphic design work with vector images , then you can resize them as much as you like without any loss of quality.
It's labeled Resolution. You can change an image's DPI in most graphics packages, including the best budget design apps.
You can even do it in Preview on a Mac, but we'll take a look at three solutions that will have you covered on any platform. Remember that DPI is only a measurement of print resolution. Changing the DPI does not change the size of your digital image, or the size of the file. If working with an image you think you'll need to print, it's a good idea to set your target print resolution before you resize it.
That will help to ensure you don't make it too small to print safely at your preferred size. Uncheck Resample Image , because this setting will upscale your image, which will make it lower quality.
Notice how the Width and Height figures change, too. This shows you the size your image will print. You can, of course, specify the width and height instead, in inches or centimeters. If you do this, just make sure your DPI doesn't drop too low to degrade the quality.
The Y Resolution should update automatically, too. Divide those dimensions by your print size and you'll get They are different because the aspect ratio length to width is different a common problem - so the smaller number applies, your digital photo will print to ppi on 8" x 10" paper with a bit of cropping.
It would meet the request for ppi at 8" x 10" more pixels are okay. We could also look at it the other way - if the request is for a photo that will print to ppi on 8" x 10" paper, we can multiply ppi by those dimensions and we'll get x pixels or 7. So, to meet the request, you'll need a digital photo that is at least 7. In fact the simplest and best request for a digital photo would be a high quality photo see the What is a High Resolution Photo section below for a definition of high quality , at X Megapixels, in a specified file type.
That's it. This has not been the case for several decades and today that legacy term is only directly applicable to scanning, where one scanning "dot" equals 1 pixel and even then it's not correct since a scanner is really scanning PPI - but most scanning software still uses the term DPI.
It's also not applicable to modern printers since they use a blended dot and they completely remap your image to convert it into print. This setting in a digital photo is simply a conversion calculator, showing you what the printed size will be at any given PPI, or, given a specific printed size, what the PPI will be.
It is a useful setting for graphic artists who are used to working on virtual paper and can be a useful setting to you simply to know what your print resolution might be for different paper sizes rather than having to use a calculator. But, it has nothing to do with the digital resolution of the photo, those are its pixel dimensions.
This is also a very dangerous setting in most photo software since it can be used to re-size the photo which can lead to much grief and misery if not done properly. Please read the Change Size section of this website before you even consider touching the number in this section of your photo software.
What is a High Resolution Photo? A " dpi photo" is sometimes referred to as a high resolution photo. Again this is a badly misused term, the resolution of a digital photo are its pixel dimensions and technically high resolution would refer to the resolving power of the pixels, the number of pixels mapping real world dimensions in the field of view of the photo.
But a request for a high resolution photo generally means a high ppi usually or greater when printed. The benchmark of ppi being "high resolution" was made many years ago - it's not as true now as it was in the past I would argue that ppi is often sufficient for most printing. But for sake of argument we can use ppi since that's what most people request.
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