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How to calculate image size for printing
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<blockquote data-quote="aroy" data-source="post: 363892" data-attributes="member: 16090"><p>There are two methods.</p><p></p><p>1. Use native driver for the printer. That means you have to know which printer will be used. This is fine if you have one at home, then you load its driver and generate a print file for that printer. A similar exercise is done for professional printing. The printing lab can give you the printer make and model and their preferred driver. You install that driver and generate a print image file, send it to the printer. The major down side of this is the file size. Fine for professional jobs, where you go your self of send the data on a disk.</p><p></p><p>2. Use jpeg/TIFF file at the proper resolution. Normally high quality prints are at 300 DPI, but you can go down to 240 or even 200 DPI. The rest is calculation. For a 24MP image of 6000x4000 pixels the maximum print size at various DPI is</p><p></p><p>1. 300 DPI : 20.00" x 13.33"</p><p>2. 240 DPI : 25.00" x 16.66"</p><p>3. 200 DPI : 30.00" x 20.00"</p><p>4. 150 DPI : 40.00" x 26.66"</p><p></p><p>You can easily do reverse calculation for your cropped images. If your images are going to be mounted on a wall and viewed from a couple of feet, then 200 DPI is good enough, especially if you print on matte paper.</p></blockquote><p></p>
[QUOTE="aroy, post: 363892, member: 16090"] There are two methods. 1. Use native driver for the printer. That means you have to know which printer will be used. This is fine if you have one at home, then you load its driver and generate a print file for that printer. A similar exercise is done for professional printing. The printing lab can give you the printer make and model and their preferred driver. You install that driver and generate a print image file, send it to the printer. The major down side of this is the file size. Fine for professional jobs, where you go your self of send the data on a disk. 2. Use jpeg/TIFF file at the proper resolution. Normally high quality prints are at 300 DPI, but you can go down to 240 or even 200 DPI. The rest is calculation. For a 24MP image of 6000x4000 pixels the maximum print size at various DPI is 1. 300 DPI : 20.00" x 13.33" 2. 240 DPI : 25.00" x 16.66" 3. 200 DPI : 30.00" x 20.00" 4. 150 DPI : 40.00" x 26.66" You can easily do reverse calculation for your cropped images. If your images are going to be mounted on a wall and viewed from a couple of feet, then 200 DPI is good enough, especially if you print on matte paper. [/QUOTE]
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