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Hi everyone! Printing photos in books? A few


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Nicksaf

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I have a photo with a resolution of 1272x896. I need to print it in a book, when puting it to MS word I determined it should be 4x6.
I am mixed up with all the Res. Dpi, Ppi, thing!

When i set the DPI to 300 without re-sampling, the size never reaches 4x6 and when i hit Print Size it looks small.
Why cant i make the resolution smaller? Does it affect the printed size? Does the auto resize in MS word ruin the quality? Please help guys! Sorry for being such a noob!
 
Hello,
first, your photo is not 4x6, you have to cut it into this format ratio. And then it is Word issue to insert the picture in correct size and quality, I think you have to set it there.
Best regards,
Peter
 
What really interests me is how to set the DPI properly. I did this and saved the picture, will it chane something about it other than quality. Please i need a detailed answer. I just dont get it...
 
Hello,
DPI affects quality of your picture, since it means DotsPerInch, so density of information in the picture. But it is calculated from your resolution and print size, so if you print 1500x1000 pixel picture on 15x10 inch paper it gives you 100 DPI, where on 7.5x5 it is 200 DPI. Does this answer your question ?
Regards,
Peter
 
But changing the dpi affects physical size? Lets say i want the photo to be 4x6 and when i set the dpi it shows 25x16 does it mean that it will be physically this size?
 
First off, its PPI (pixels per inch), not dots per inch.

Remember, you are always working with the number of pixels that came out of the camera. So changing the size (without resampling) will alter the PPI.

Making the image smaller increases the PPI, because you are taking X number of pixels and putting them into a smaller space, so there are more per inch. Making it larger decreases the PPI, since you are spreading out X number of pixels over a larger area so there are less per inch.

Increasing the PPI will decrease the image size, and conversely, decreasing the PPI will increase the image size.

If you want a specific PPI and size combination you need to resample, then PS will add or delete pixels to give it to you.
 
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Just be careful if you resample to have a copy of the original in a separate document, just in case. Once Photoshop throws away pixels they're gone. Unless you make the layer a smart object.
 
hawkeye said:
First off, its PPI (pixels per inch), not dots per inch.
Click to expand...

DPI is not PPI, that is correct, but it really does not matter, since as long as you do not assign size for print it is only meaningless value and when you print smaller from those two counts, whichever of them it is.
 
It is important though to understand you are talking about pixels, and that there is a fixed number of them.
 
I totally agree, but pixels are already in resolution, which is during the whole process before printing the most important definition of size.
 
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