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High resolution screen captures
There is an easier way to get a better print resolution.
Changing the dpi value stored in an image DOES NOT improve it's quality...
The procedure you describe has absolutely no effect on the data representing the pixels in the image (so would give no improvement to the printed output). The number you're modifying simply tells the software displaying the image how big a pixel is intended to be (1/72 of an inch or 1/300th of an inch in your example). Most software actually ignores this value, anyway, especially on raster-based images (as opposed to vector based, such as SVG files). Any software that actually does try to honor the new resolution you've given the image will simply display (or print) it at a much smaller apparent size (e.g. a 4 inch by 5 inch image originating at 72dpi would be displayed as 0.96 inches by 1.2 inches after having its resolution changed to 300dpi, regardless of the output device, screen or printer, in software that uses this value correctly). |
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