• pixels - Dots of color that your photo is comprised of.
• image size - The number of pixels in an image, both for length and width.
• dpi - dots per inch - The resolution of the image is determined by its dpi. 300 dpi means a file has 300 dots, or pixels, across every 1 inch within it. An ideal size for any submission is 300 dpi.
• file size - A measurement typically expressed in kilobytes (KB) or megabytes (MB).
• profile – The color space the image uses. Most digital photos are, by default, RGB.  Others may include CMYK or Lab. 

Calculating the image size: 

The file you want to provide will, by default, have a set height and width.  It can be displayed as inches, but more commonly by pixels, i.e., 3000 x 5000 pixels.  So to determine 1) if this image is large enough for the application, and 2) is the resolution good enough to produce a quality piece. We can answer both these question by simply checking the properties of the image.  Let us first, ALWAYS base our calculations on a 300 dpi resolution. So, if we check the properties of an image and it states that the image is 3000 pixels or dots wide, we can divide that width by 300 to get the images width (10 inches wide) in inches at a resolution of 300 dpi. It is a formula that can be useful to those who do not have access to graphic applications. And it works with any desired dpi: 

300 dpi, 10 inches x 5 inches =
150 dpi, 20 inches x 10 inches =
75 dpi, 40 inches x 20 inches =

all are 3,000 x 1,500 pixels.

So on your next project, be it a brochure, flyer or a photo you want retouched or restored, consider what you are submitting to achieve the best results. 

Contact us here or visit our main site for questions or comments, edwards design, www.energdesign.com.