Posted by ketyung
on Sep/18/2007
at 6:16 am
Perhaps, you’ve been comparing among your friends that the number of megapixels that your digital cameras are capable of. But, do you know what all these megapixels mean in layman term for the digital cameras? How do you relate them to the picture quality? Perhaps, in your mind you only know, the higher the number of pixels, the better the image quality.
Here comes a good tip and a much straightforward way and in nicely tabulated form to let you grab the idea about how the value of megapixels can affect picture quality. As shown in the table below, the most straightforward way to explain is the higher the number of megapixels, the bigger the maximum print size of the picture can achieve at certain PPI (Pixels per inch). The pixel per inch refers to density of pixels on the image, which is the higher the density, the finer the image is. The table shown below, compare between two different PPIs, which are 300 and 200 PPI. Pictures with 300 PPI are definitely having better quality than those with 200 PPI. The table shows that if you have a camera that is capable of 2 megapixels, and you can’t even make a standard 4×6 inch print at 300 PPI, unless you’re willing to reduce the picture quality down to 200 PPI, perhaps something lower than 200 PPI.
|
# of Megapixels |
Max Print Size at 300 PPI |
Max Print Size at 200 PPI |
| 2 | 5.8″ x 3.8″ | 8.7″ x 5.8″ |
| 3 | 7.1″ x 4.7″ | 10.6″ x 7.1″ |
| 4 | 8.2″ x 5.4″ | 12.2″ x 8.2″ |
| 6 | 10.0″ x 6.7″ | 15.0″ x 10.0″ |
| 8 | 11.5″ x 7.7″ | 17.3″ x 11.5″ |
| 12 | 14.1″ x 9.4″ | 21.2″ x 14.1″ |
| 16 | 16.3″ x 10.9″ | 24.5″ x 16.3″ |
via [iMaGe123pHoTo]
digital camera tip,megapixels,tips for digital camera
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