Choosing the Right Resolution

Has the term high resolution or low resolution ever confused you? I’ve noticed a widespread misconception that high res = “large”. I’d like to debunk that myth and help clients recognize what constitutes a high res photo and when to use it.

Rather than detailing the mathematics behind the difference, let me share the basic standard: A low res image, suitable to view on a computer screen, is 72 dpi. A high res image, suitable for printing, should be set at a minimum of 300 dpi. Why? Printers are capable of outputting a much higher quality photograph than an monitor’s screen can display. A photograph of 72 dpi that looks great on screen will print fuzzy and blurred.

When contracting with a new photographer, be sure to outline at what resolution your photographs will be delivered. The resolution you need will depend on what you plan to do with the photos. If you purchased basic headshots for your Linkedin or Facebook profile, you’ll want websize, low res photos. If you will also need them for a printed biography or press release, be sure your photographer delivers you print sized photos. Seasoned professional photographers will likely present you with both versions. Can you post high res photos to your Facebook page? Sure, but it will take longer to upload, longer to pop-up on screen, and won’t look any better.

What if you have a collection of old photos that you’d like to print, but don’t know their resolution? As a designer I’ve dealt with many projects that include securing outsourced pictures from unknown sources. Because I am equipped with robust design and photo software, I can distinguish resolution quickly. Some of my colleagues and project counterparts, however, are not so lucky. A simple trick if you have Microsoft Office Picture Manager on your computer (as the majority does): Open the photo, go to File -> Properties and view the right-hand sidebar. Click the word “More” and your image resolution will pop-up, listing the dpi.

For more information on dpi, ppi, and all that mathematical nonsense, try DigiCamGuide’s fairly straightforward article on the same topic.