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05-06-2010, 05:28 AM
| | Member | | Join Date: Apr 2010
Posts: 52
| |  Understanding Resolution
Image resolution can be a tough concept to wrap your brain around. When referring to an image, resolution is the number of pixels displayed per unit of printed length. It's a measurement used in printing and it's stated in dots per inch (dpi). This makes sense because printers print dots, and that's what a printed image is composed of. When referencing an image onscreen—on a computer monitor, TV, or projector—resolution is stated in pixels per inch (ppi). This too makes sense because digital images are displayed in tiny individual blocks of color called pixels. How Resolution and Pixels Work Together The resolution measurement dictates how closely an image's pixels are packed together. Increasing an image's resolution means the pixels will be packed together more tightly, resulting in a smaller physical size, but generating a smoother, higher quality print. Lowering an image's resolution means loosening the pixels, resulting in a larger physical image size, but generating a blocky, lower quality print.
Think of the resolution measurement as density. For example, the tighter a substance is packed, the denser it is and the less surface area it takes up (like brown sugar). The more loosely a substance is packed, the more surface area it consumes and it becomes less dense.
The confusing part is that when it comes to imagery, printers are the only devices that can do anything with the resolution measurement. Because our eyes can process only so much information, a 72ppi image onscreen looks identical to a 600 ppi image onscreen. However, a printer isn't hampered by the human eyeball and can take advantage of resolutions much higher than 72. | Sponsored Ads | | Member | | Join Date: LongTime Posts: 1100 | |  New Sponsored Ads
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05-08-2010, 07:21 AM
| | Junior Member | | Join Date: May 2010 Location: u.k
Posts: 13
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Hello
With digital photography, there are lots of different ways to share your pictures (like email, websites, etc) but for those really important pictures most people want to have them printed and framed.
In addition to framing and displaying your best pictures, there are several other reasons that you may want to print your photos. Here are a few of the many ways printed photographs are used.
* Framed for the mantle, table and wall displays
* Posters
* Wallet pictures
* Memory books
* Greeting cards
* Photo crafts
* Photo competitions
Even in our digital day and age, we still have lots of interesting and beautiful things to do in print! But printing a photograph isn't as easy as selecting "Print" on your computer. Printing a quality print of a photograph is trickier than printing, say, a flyer. These photo printing tips will help make the process easier so you can get better quality prints.
Digital Photography 101 - Pixels Matter
Before you resize a picture on your computer, figure out first if you may ever want to print it. If so, be sure to hang on to the original.
When taking pictures, you always want to know if you plan to print the picture so you can take it with a high enough resolution to get a quality print in the size you want. Below are some examples to help you know how many pixels are needed for different sizes of prints.
High quality 10 x 13
2592 x1944 pixels (a 5 mega pixel camera set for high resolution)
High Quality: 9 x 12 inches
2272 x 1704 pixels ( a 4 mega pixel camera set for high resolution)
High Quality Picutres: 8 x10 inches
2048 x 1536 pixels ( a 3 mega pixel camera set for high resolution)
High Quality Picture: 4x6 or 5x7 inches
1600 x 1200 pixels (2 megapixel camera set for high resolution) |
06-22-2010, 04:45 AM
| | Senior Member | | Join Date: Jun 2010 Location: u.k
Posts: 285
| |
Hello
Judging from the number of letters we get with similar questions, 'resolution' is a phenomena not well defined or understood in the computer graphics field.
Resolution is the number of units that occupy a linear inch in an image. It's measured in terms of ppi, or 'pixels per inch' when viewed in an image or on the monitor. It's referred to as dpi or 'dots per inch' in terms of printing. Any way you call it, resolution determines how the image will appear on the screen and how it will print -- more importantly, how the pixels are distributed in the document.
The resolution 'scale' is not as important to us as the number of pixels the document actually contains. This is the crucial information. | Sponsored Ads | | Member | | Join Date: LongTime Location: Here Posts: 1100 | | New Sponsored Ads
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