Hi David, On Mon, 1 Jul 2002 13:37:47 -0400, David Brooks wrote:
>Thanks Wendy.I really like your March Road shot. >The main problem i was having was when i >resized from a large dpi scan,300 or 600 dpi, >in PS6(to the pug size of 600x400 and 75 k)the >picture size was reduced to less than an inch >by abit bigger than an inch. >Am i missing something with the size of file vs >the constrants in image resize>??? Yes you are missing something important :-) You could have changed that resized image (600x400 pixels) to the right "display size" by adjusting the DPI from 300 to something like 75 in photoshop. That way photoshop will show you a size that is valid for most monitors. Do NOT resample doing this, or you will change the number of pixels again! The size indicated by your imaging program is just an indication and is valid for the (also specified) number of pixels/inch The 300 DPI is used by the scanner and is put in the outputfile so a printer can print it out in the original size. 300 DPI is fine for printer. So if you have 600x400 pixels and 200 pixels/inch (sometimes called PPI or DPI) the size printed would be 3x2 inches. Programs like photoshop can size the image on the screen to match the printing size. Viewing the image in 1:1 scaling however, will use the monitor/graphic card resolution which is usually something like 72 or 75 pixels/inch. You can change the printing size for an image in photoshop without changing the number of pixels. All it needs to do is change the number of pixels/inch. This value is saved with the image so other programs can use the same value again when printing ... A 600x400 pixels image is just that 600 times 400 pixels, that is what defines the resolution of the image when displayed or printed without any further interpolation. On a computer-monitor, the total screen is usually 800x600 or 1024x768 pixels, so an image like 600x400 will easily fit on that. In general, displaying on a computer monitor will NOT change the image resolution by donig a resize or interpolation. So for submission to the PUG it does not really matter, as long as you have 600x400 pixels (or something close to that) you are fine. Regards, JvW ------------------------------------------------------------------ Jan van Wijk; http://www.dfsee.com/gallery - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
