Comments on: Why dpi does not matter http://www.wisnaes.com/2005/09/29/why-dpi-does-not-matter/ Tips and ideas for people that work with visual media. Sun, 25 Jul 2010 21:25:30 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Gwyn Headley http://www.wisnaes.com/2005/09/29/why-dpi-does-not-matter/comment-page-1/#comment-37115 Gwyn Headley Thu, 04 Mar 2010 16:09:39 +0000 http://www.wisnaes.com/?p=24#comment-37115 Why does everyone who writes on this subject make the same basic error? Dots are dots, pixels are pixels, and the following link is the reason why professional picture libraries and stock agencies demand that photographs uploaded to their sites have a resolution of 300 ppi (pixels per inch, not dots per inch): <a href="http://blog.fotoLibra.com/?p=309" rel="nofollow">http://blog.fotolibra.com/?p=309</a> Why does everyone who writes on this subject make the same basic error? Dots are dots, pixels are pixels, and the following link is the reason why professional picture libraries and stock agencies demand that photographs uploaded to their sites have a resolution of 300 ppi (pixels per inch, not dots per inch): http://blog.fotolibra.com/?p=309

]]> By: Why DPI Does Matter | fotoLibra Blog http://www.wisnaes.com/2005/09/29/why-dpi-does-not-matter/comment-page-1/#comment-37114 Why DPI Does Matter | fotoLibra Blog Thu, 04 Mar 2010 14:04:42 +0000 http://www.wisnaes.com/?p=24#comment-37114 [...] I was pointed to a couple of blog postings yesterday, one called The Myth of DPI and the other titled Why DPI Does Not Matter. [...] [...] I was pointed to a couple of blog postings yesterday, one called The Myth of DPI and the other titled Why DPI Does Not Matter. [...]

]]> By: Svein http://www.wisnaes.com/2005/09/29/why-dpi-does-not-matter/comment-page-1/#comment-8726 Svein Fri, 09 Nov 2007 01:34:50 +0000 http://www.wisnaes.com/?p=24#comment-8726 If DPI will ever count on anything else than paper, then the whole display industry will have to re-invent their technology, and I do not see any sign of that happening any time soon. As long as you can not know anything about the size of the display your reader is using, you can not control the size of anything on their screen. The problem is that an inch will contain different numbers of pixels on different screens even if the total number of pixels are the same. A 19 inch monitor at 1280x800 has a higher DPI than a 24 inch monitor at 1280x800 if you could ever use DPI about this. Also, each of these monitors can change the number of pixels displayed. But who knows what the future brings? We need to teach our students what is real today. And putting a picture on the internet, downloading it and opening it in Photoshop will not change anything in the picture at all. Unless, of course you actually change something in that process. If DPI will ever count on anything else than paper, then the whole display industry will have to re-invent their technology, and I do not see any sign of that happening any time soon.

As long as you can not know anything about the size of the display your reader is using, you can not control the size of anything on their screen. The problem is that an inch will contain different numbers of pixels on different screens even if the total number of pixels are the same. A 19 inch monitor at 1280×800 has a higher DPI than a 24 inch monitor at 1280×800 if you could ever use DPI about this. Also, each of these monitors can change the number of pixels displayed.

But who knows what the future brings? We need to teach our students what is real today. And putting a picture on the internet, downloading it and opening it in Photoshop will not change anything in the picture at all. Unless, of course you actually change something in that process.

]]> By: hawken king http://www.wisnaes.com/2005/09/29/why-dpi-does-not-matter/comment-page-1/#comment-8682 hawken king Thu, 08 Nov 2007 03:05:13 +0000 http://www.wisnaes.com/?p=24#comment-8682 true, for now. Not very future proof though is it? if you wanted your students to learn the true meaning of DPI get them to save various images in various DPI, upload them to the internet then save them from the internet and drag them into illustrator or photoshop, and see what happens. one day soon screens will be good enough to display very high resolutions, then dpi will count - currently macosx is resolution independent, if you mess around with DPI it does count. true, for now. Not very future proof though is it?

if you wanted your students to learn the true meaning of DPI get them to save various images in various DPI, upload them to the internet then save them from the internet and drag them into illustrator or photoshop, and see what happens.

one day soon screens will be good enough to display very high resolutions, then dpi will count – currently macosx is resolution independent, if you mess around with DPI it does count.

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