Resolution For Digital Images Agawam MA

Resolution is a concept that continues to baffle even graphic artists. In the context of editing photos, resolution is a measurement of the output quality of an image. The most common units to measure resolution include: PPI (pixels per inch), DPI (dots per inch), LPI (lines per inch), and SPI (samples per inch). For our purposes, we will focus on DPI and PPI because that is what you will be dealing with most often when printing photographs.

Printing Considerations

MP (Megapixels) simply means "one million pixels" and is used when describing digital camera capability. Some digital cameras now boast photo abilities over 5 megapixels.

PPI or "pixels per inch" is the term you will see most often when selecting a resolution for your images in photo editing software. Pixel is an abbreviation for "picture element." Millions of pixels make up the image of paper and text that you are viewing on your screen right now.

So how do you best choose a pixel resolution for your photos? First, you need to consider where you will use your pictures (in print or online) and how large they will appear. For best results, a good number to remember when printing an image is 300 pixels/inch at actual size. In other words, when you resize an image with photo editing software, set the dimensions of the image to the print size first (e.g. 5 x7) and then set the resolution to 300 pixels/inch. The lower the pixels per inch, the blurrier the image will appear on paper. Depending on your printer, you could get acceptable results from 200-300 pixels/inch. In contrast, an image from the Internet is typically only 72 ppi. When you try to enlarge a picture with such a low resolution further, you are asking the software application to make up for pixels that don't exist; the image will get blurrier. So, what pixel size do you need for great printing results with the least strain on your computer memory resources? Below is a quick reference chart.

5 MP = 2592 x 1944 pixels

Great Quality: 10 x 13 inches

Good Quality: 13 x 19 inches Click to read more from TopTenReviews.com