GRAPHICS COMPLEX ILLUSTRATIONS OR PHOTOGRAPHS PHOTOGRAPHY Complex illustrations or photographs
The anatomic graphic below was originally painted at much higher resolution in Adobe Photoshop . We then reduced a copy to the size above and used Photoshop's "Unsharp Mask" filter to restore sharpness. Although this small version of the painting has lost some resolution and color detail, it still shows all the major anatomic landmarks. The extra detail and subtle nuances of high-resolution artwork are not entirely lost when the graphic is reduced to Web page size.
info.med.yale.edu/caim/cnerves
We chose the JPEG file format for the anatomic painting because the artwork is relatively large for a Web page graphic. JPEG compression can be used for paintings or photographs with text labels if you choose the right compression setting. The painting above was compressed in Photoshop at "good" quality, which is the medium-quality setting . If you choose the "good" or "excellent" JPEG compression settings, text labels should look acceptable, at least on 16-bit or 24-bit displays. Note that in the anatomic illustration example shown above the text labels are clear and legible, even though close inspection would certainly turn up JPEG noise around the characters.
source GRAPHICS COMPLEX ILLUSTRATIONS OR PHOTOGRAPHS PHOTOGRAPHY http://webstyleguide.com
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