Book Design and Imaging

72 dpi on my images.... is this so bad? blurb requires 150-300 dpi

Hello to all

Iam asking this because blurb so far i have seen requires 150-300 dpi for the images.

I am wondering for the the final print quality ….

Thanks and excuse my bad english.

George

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Posted by
pressgeo
Sep 12, 2009 2:54pm PDT
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pressgeo
 

The funny think is that when i put my cursor to the image at Booksmart it shows 300 dpi.

Does booksmart converting images to 300 dpi automatically?

Posted by
pressgeo
Sep 12, 2009 3:16pm PDT
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pressgeo
 

The 72 dpi that is attached to the metadata is a psuedo arbitrary number.  Arbitrary because it has no meaning as far as BookSmart is concerned, and psuedo because it is actually based upon standard screen or web resolution.  Did you find a size associated with the 72 dpi?  It was probably very large (10’s of inches on a size).  Printed at 72 dpi, that is how big the picture would be.  Printed at 300 dpi it would be about 1/4 that size on each side (1/16 total area). 

Look at the pixel width and height of your picture, divide by the number of inches the respective dimension that it will be displayed in, and that is your dpi.  Ignore the dpi number in the file.

 Mike 

Posted by
Charybdis
Sep 14, 2009 2:34pm PDT
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Charybdis
 

Thanks Mike

Posted by
pressgeo
Sep 16, 2009 10:45am PDT
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pressgeo