Because these shots are hi res (ie 512 pixels):

if they are to be printed originsal size or bigger, ideally they should be:


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scaled by 0.625 widthways 


so they are 62.5% of their  original width to put them in their correct aspect ratio. 

ie they should still retain 512 pixels, but printed thinner if you like 


this way they retain their quality.. (ie they remain 'hi-res' images)


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Otherwise for printing smaller they should be resized to 320 wide x 256 high, before reducing to the required size.





thanks.
