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Improve the quality of printed iPhoto books
I'm not sure why Apple would have it set this way, nor if changing it will really improve the printd quality -- isn't it also dependent on the resolution of the source images? Absolutely the image resolution makes a difference. The key is this: iPhoto is resizing the images for the PDF file before uploading. So for example, the images I was using were 8MP files at 3504x2336. A full page of the large keepsake book is 8.5x11 and most of the pictures in the theme I used weren't full page anyway. Still, the pictures I was using would be over 300dpi at that size (7.3x11 @ 318dpi). However, the image uploaded by iPhoto is resized to 1650x1100 at 150dpi with the default settings when you choose a medium or large book. That is not NEARLY enough image data for a picture printed at that size. The tradeoff? A much larger upload. But I can tell you that full page pictures in the small book looked terrific, and even the smallest pictures in the large book looked terrible. The change in DPI is the only difference I could come up with. |
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