An A3 photographic image may look fine with a resolution of 150dpi. When it comes to digital, people are often under the impression that the resolution should be set to 72dpi, but this is only a legacy value and it is image dimensions that are more important, because you are fitting a grid of pixels (your image) into a grid of pixels (the screen).
Learn the differences between 300 DPI and 600 DPI scan settings and how they affect the quality of your digital images. Find out which resolution is best for different purposes, such as printing, sharing, or archiving, and how to get the best photo scans with tips and services from Image Restoration Center.
For example, sending a 203 DPI format to a 300 DPI printer will result in an image that is approximately 33% smaller. Solution. Verify the printhead resolution is the same on both printers by comparing a printer setup label (Configuration Label). Note the line that states the Resolution value. These should be the same on both printers.
When this is not the case (too little dpi), you put the dpi at 300, check the resample box, and your picture is ready to be printed. However pay attention: when your picture is too far under 300 dpi, you might try to resample it to 300, but what you get then is a inferior print. Too much difference is not allowed. So consult with your printer.
The more dots there are in a fixed amount of space, the more detailed the image will be. In other words, a 600 DPI document will have more detail than a 300 DPI document. DPI indicates how many pixels are found in one linear inch of your printed material (image source). In printing, this factor is crucial for creating a clear, legible document.EWWOrh.