Is there a rule of thumb for what a bing map's zoom setting should be based on how many miles you want to display?

Posted by Clay Shannon on Programmers See other posts from Programmers or by Clay Shannon
Published on 2012-12-01T01:37:22Z Indexed on 2012/12/01 11:22 UTC
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If a map contains pushpins/waypoints that span only a couple of miles, the map should be zoomed way in and show a lot of detail. If the pushpins/waypoints instead cover vast areas, such as hundreds or even thousands of miles, it should be zoomed way out.

That's clear. My question is: is there a general guideline for mapping (no pun intended) Bing Maps zoom levels to a particular number of miles that separate the furthest apart points? e.g., is there some chart that has something like:

Zoom level N shows 2 square miles Zoom level N shows 5 square miles etc.?

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