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Digital Lifestyle
Images, Graphic Design, and Digital Photography
Pixels, and resolution, and quality, oh my!
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<blockquote data-quote="Exodist" data-source="post: 1636607" data-attributes="member: 284358"><p>LOL yea moving it here is better. I tend to lurk in the section of the forums more then others. </p><p></p><p>I can try to help, but your question is hard to follow as a question. More like a statement really then a question.. So I will just go over the basic run down of PPI and DPI -vs- image size or resolution.</p><p></p><p>Lets get old school and say your sony digital camera only takes 800 x 600 pixel images (yea I used one like this in the Navy for work, ick..). For easy math and control purposes.</p><p> DPI refers to your Printers printing density. This started about the time of Dot Matrix Printers and carried over into the bubble jet types. Now lets say you want to print at 400 DPI (dots per inch). The maximum size you can print this image at is 2 x 1.5 inches without loosing image quality. And at 200DPI that would be 4 x 3 inches. Again without loosing image quality. You could set this to 1DPI and be able to print it large enough to fit on the size of a billboard sign, but it would look horrid up close. However billboards are meant to be read from a distance anyway and you can see when this could be an option. </p><p></p><p>Now lets get over to PPI (Pixels Per Inch), PPI normally refers to your displays pixel density. DPI refers to your Printers printing density. Normally screens have had a pixel density of 72 to 96ppi. However times are changing and retina displays have already pushed way past this.</p><p></p><p>Now in the past many people wanted images rendered at 72ppi for web work. Also many folks wanted 400dpi for printing. </p><p></p><p>However for printing we no longer have to use or worry about this nonsense anymore.</p><p></p><p>Most modern cameras shoot 18-20MP or higher and the resolution far exceeds what you can print on a 8x10 photo sheet even at 400dpi. When using Lightroom or Photoshop you can tell the software what size you want the image to print or save as and it will scale the image to that size while trying to maintain as much detail as possible. </p><p></p><p>Lightroom still has the option to allow you to choose DPI or Image Size, however you can't use both at the same time. <a href="http://youtu.be/8vJ9hnj_V4A" target="_blank">I have a video on this BTW..</a></p><p></p><p>Now for website work, we still use PPI as there is no real other way to size the graphics accordingly. Using inches or centimeters for this would only end up being a rubber ruler and giving obituary results on each display you went to.</p></blockquote><p></p>
[QUOTE="Exodist, post: 1636607, member: 284358"] LOL yea moving it here is better. I tend to lurk in the section of the forums more then others. I can try to help, but your question is hard to follow as a question. More like a statement really then a question.. So I will just go over the basic run down of PPI and DPI -vs- image size or resolution. Lets get old school and say your sony digital camera only takes 800 x 600 pixel images (yea I used one like this in the Navy for work, ick..). For easy math and control purposes. DPI refers to your Printers printing density. This started about the time of Dot Matrix Printers and carried over into the bubble jet types. Now lets say you want to print at 400 DPI (dots per inch). The maximum size you can print this image at is 2 x 1.5 inches without loosing image quality. And at 200DPI that would be 4 x 3 inches. Again without loosing image quality. You could set this to 1DPI and be able to print it large enough to fit on the size of a billboard sign, but it would look horrid up close. However billboards are meant to be read from a distance anyway and you can see when this could be an option. Now lets get over to PPI (Pixels Per Inch), PPI normally refers to your displays pixel density. DPI refers to your Printers printing density. Normally screens have had a pixel density of 72 to 96ppi. However times are changing and retina displays have already pushed way past this. Now in the past many people wanted images rendered at 72ppi for web work. Also many folks wanted 400dpi for printing. However for printing we no longer have to use or worry about this nonsense anymore. Most modern cameras shoot 18-20MP or higher and the resolution far exceeds what you can print on a 8x10 photo sheet even at 400dpi. When using Lightroom or Photoshop you can tell the software what size you want the image to print or save as and it will scale the image to that size while trying to maintain as much detail as possible. Lightroom still has the option to allow you to choose DPI or Image Size, however you can't use both at the same time. [URL="http://youtu.be/8vJ9hnj_V4A"]I have a video on this BTW..[/URL] Now for website work, we still use PPI as there is no real other way to size the graphics accordingly. Using inches or centimeters for this would only end up being a rubber ruler and giving obituary results on each display you went to. [/QUOTE]
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