Ok, I've just been getting my head wrapped around the idea of absolute pressure, which I need to set my "BARO" setting to "0", correct? So, I did. I then set my "ALTITUDE" setting to 29.92 inHg, right? (It calculates the altitude comprable to standard baro pressure, I guess.) So, if my Kestrel 4500 NV is set up in the previous manner, is it taking absolute pressure? Also, will the "DENS ALT" (DENSITY ALTITUDE) be the correct value? I need the density altitude number to plug into "Shooter" for my Droid 4. Thanks for the enlightenment .