PPI Pixels per Square Inch and Digital Camera Resolution

Digital cameras can capture images in different resolutions. Low-resolution images are appropriate for display on a website, but not for making photographic-quality images. A 6-megapixel digital camera refers to the maximum number of pixels (PPI) such a camera is capable of capturing. The PPI is the number of pixels displayed in the image file, which directly refers to image resolution. Digital cameras have capture settings that can be set to less than the maximum PPL For example, most digital cameras have image size or PPI settings usually described as large, medium, and small. The Large setting represents the maximum allowable image resolution for that particular camera and will always produce a larger image file than the Small setting. Hence, a 10-megabyte image file created with the Large setting will always contain more pixel information than a 1-megabyte image file created with the Small setting.

A 10-megapixel camera using the Large setting might have a PPI setting of (width) 3888 X (height) 2592, which will have sufficient resolution for 11 X 14 inch photographic-quality prints, which is usually adequate for most amateurs. A Small setting might be adequate only for use on the Web. A computer with image processing software can reassemble the PPI from large, medium, and small image files for printing, emailing, or posting to a website. It is always best to shoot "large" and reduce the PPI for the Web or other uses, rather than to shoot "small" and increase PPI to print, because the resulting quality will be less than optimal.

Digital Cameras For Beginners

Digital Cameras For Beginners

Although we usually tend to think of the digital camera as the best thing since sliced bread, there are both pros and cons with its use. Nothing is available on the market that does not have both a good and a bad side, but the key is to weigh the good against the bad in order to come up with the best of both worlds.

Get My Free Ebook

Post a comment