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making images sharper
Adapted from a post by Michelle Clare on the APG list, Jul 23, 2008 at 8:02 PM
Picture resolution ---photo size and dpi (dots per inch) are inversely related.
As dpi goes up photo size has to go down to get the same resolution. [Not usre this was was correctly stated. Seems like as DPI goes up, photosize can go up as well to get same resolution]
Some rules of the thumb:
| view onscreen | 72 dpi
| | publication | 300dpi
| | Printing from an inkjet printer | 200-250 dpi
At 300 dpi an image size of approx. 2.1² x 1.6² will achieve a look similar to that which what would be needed if a designer was going to print it (say in a book or a magazine).
There are several programs which use fractal imaging to improve clarity.
Genuine Fractals ($160) works inside Photoshop and can be used to blow up images by 300-400% without making them look "muddy". |
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