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Originally Posted by Thomas Anderson
No because resolution surely would be counted as dpi, so on mine the fine may be 150dpi, whereas economy may only be 75dpi or something like that. With my printer if I take an image that is even 1024 x 768 and print it A4 it looks good. When I go to print something if it is 1600 x 1200 it is too big for the printer so I have to resize it (thankfully I can do that on the print preview page), so I don't know what resolution my printer can handle (it's new), but 1600 x 1200 is plenty big enough for A4.
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You don't want to argue when you don't know what you're talking about. You really can't count DPI's in computer (or camera) resolution (as it differs with every screen), it's for paper only. And your definition of "good" may not be the same as the rest of the worlds. It's a de facto standard that you need at least 150dpi to get even remotely decent pictures. 75 DPI would be a mess.
Resizing images for printing doesn't have anything to do with the screen resolution or the printer resolution. 1600x1200 is not big enough for A4 if you want good prints. Have you ever thought that you could print a 10x10 image and resize it to fill an entire A4 paper? It's still not A4 quality.
Here's something to read:
Resolution
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Last modified: Monday, May 05, 2003
Refers to the sharpness and clarity of an image. The term is most often used to describe monitors, printers, and bit-mapped graphic images. In the case of dot-matrix and laser printers, the resolution indicates the number of dots per inch. For example, a 300-dpi (dots per inch) printer is one that is capable of printing 300 distinct dots in a line 1 inch long. This means it can print 90,000 dots per square inch.
For graphics monitors, the screen resolution signifies the number of dots (pixels) on the entire screen. For example, a 640-by-480 pixel screen is capable of displaying 640 distinct dots on each of 480 lines, or about 300,000 pixels. This translates into different dpi measurements depending on the size of the screen. For example, a 15-inch VGA monitor (640x480) displays about 50 dots per inch.
Printers, monitors, scanners, and other I/O devices are often classified as high resolution, medium resolution, or low resolution. The actual resolution ranges for each of these grades is constantly shifting as the technology improves.
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I also suggest you take a loog at JPEG-compression to know what the high, medium and economy settings in your camera do.
And here's more on the subject:
http://www.microscope-microscope.org...resolution.htm
Ice
06-18-2004, 06:45 PM
