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First I began Monday by uploading a cover for a six by nine pine layout book - i.e. one image for everything. The guidelines said that meant an image nine and a half inches high, by thirteen wide, at 300 DPI. Which comes out to 2850 dots by 3900 dots. So I did just that and added a 1% fudge factor just for luck. It came back as rejected for having a white border.
So I recropped the image, resized it to exactly the same dimensions and submitted it again. This time it was undersized - coming in at 299 DPI, despite being perfectly foto fine the first time at those exact dimensions. The third time I increased foto the size of the image to a 2% fudge factor and guess what - the image was now at 295 DPI!!! For days it seemed the larger I made the image the smaller it got.
I thought for a while that it might be something to do with the programs cropping / fitting process. And when I got the first message back saying the width should be 12.95 inches instead of thirteen I jumped on it. That meant my pixels should be 3885 instead of 3900, and so sized accordingly.
So my question is - is there a difference between DPI and pixels? I know the inches are innacurate of course - I have been through the truly painful rejection for having a cover sent back by the program foto when it was only at 300 DPI and it needed to be at 300 DPI.
DPI : dots per inch. While most people use this to mean pixels per inch, and as such, no real problem. But correctly it is the printer that spits out dots of inch where dpi means something: the number of addressable dots of ink. For example, the color presses CS appears to use have an addressable resolution of approximately (I don't want to look it up) of 2400 dpi. So a pixel at 300 ppi (dpi) would represent 8 dots of ink per inch (in two dimension, a pixel could have 16 dots of ink.
Did you know that your Internet Explorer is out of date? For the best possible experience with CreateSpace.com we recommend that you upgrade to a newer version, or use an alternate web browser. A list of the most popular web browsers can be found below.
First I began Monday by uploading a cover for a six by nine pine layout book - i.e. one image for everything. The guidelines said that meant an image nine and a half inches high, by thirteen wide, at 300 DPI. Which comes out to 2850 dots by 3900 dots. So I did just that and added a 1% fudge factor just for luck. It came back as rejected for having a white border.
So I recropped the image, resized it to exactly the same dimensions and submitted it again. This time it was undersized - coming in at 299 DPI, despite being perfectly foto fine the first time at those exact dimensions. The third time I increased foto the size of the image to a 2% fudge factor and guess what - the image was now at 295 DPI!!! For days it seemed the larger I made the image the smaller it got.
I thought for a while that it might be something to do with the programs cropping / fitting process. And when I got the first message back saying the width should be 12.95 inches instead of thirteen I jumped on it. That meant my pixels should be 3885 instead of 3900, and so sized accordingly.
So my question is - is there a difference between DPI and pixels? I know the inches are innacurate of course - I have been through the truly painful rejection for having a cover sent back by the program foto when it was only at 300 DPI and it needed to be at 300 DPI.
DPI : dots per inch. While most people use this to mean pixels per inch, and as such, no real problem. But correctly it is the printer that spits out dots of inch where dpi means something: the number of addressable dots of ink. For example, the color presses CS appears to use have an addressable resolution of approximately (I don't want to look it up) of 2400 dpi. So a pixel at 300 ppi (dpi) would represent 8 dots of ink per inch (in two dimension, a pixel could have 16 dots of ink.
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