Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

In Adobe Reader preferences dialog under Page Display, there is an option "Resolution" with a default value 110 dpi. I tried to change it, from 56 to 400, and found nothing changed except zoom value. So what exactly is the purpose of this resolution option?

share|improve this question

1 Answer 1

It's to do with the resolution of a scanned document and the size at which it is displayed on your screen. For example, a common resolution to scan documents at is 300 DPI (dots per inch), so if you had this document on your computer and wanted to view it at it's original resolution, you would select 300 DPI.

As you figured out, all it really does is change the zoom level, but for some people (especially those that work with scanning or printing a lot) it can be an important tool to judge what a physical copy of something will look like. There's more to it than that, but it's the main idea.

For most people, however, it is not particularly useful, and unless you are doing more than viewing PDFs, you probably don't need to worry about it.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.