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<blockquote data-quote="PaulPosition" data-source="post: 318172" data-attributes="member: 25700">Even guys at the prints are sometime unaware of what DPI exactly mean.It is just the ratio of the image's pixel count vs the expected print size. It's not a property of the image file itself, unlike bit depth, but a metadata that's tacked on it for information, like the size in inches.Say you have a 900x900 pixel image.- a 1inch print would be 900 DPI- a 3 inch print would be 300 DPI- a 10 inch print would be 90 DPISame image, nothing changed but for expectations. You don't control DPI in camera, only pixel count. Be wary if/when you change DPI value in Photoshop or other software : make sure you've entered the right values for expected print size or else it might very well cut in the image quality when it resamples (imagine you've left it at 1x1 inches, 400 DPI would turn your 24 megapixel image into a 400x400 pixels one).</blockquote>

[QUOTE="PaulPosition, post: 318172, member: 25700"] Even guys at the prints are sometime unaware of what DPI exactly mean. It is just the ratio of the image's pixel count vs the expected print size. It's not a property of the image file itself, unlike bit depth, but a metadata that's tacked on it for information, like the size in inches. Say you have a 900x900 pixel image. - a 1inch print would be 900 DPI - a 3 inch print would be 300 DPI - a 10 inch print would be 90 DPI Same image, nothing changed but for expectations. You don't control DPI in camera, only pixel count. Be wary if/when you change DPI value in Photoshop or other software : make sure you've entered the right values for expected print size or else it might very well cut in the image quality when it resamples (imagine you've left it at 1x1 inches, 400 DPI would turn your 24 megapixel image into a 400x400 pixels one). [/QUOTE]

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