There is *nothing* to learn from EXIF data. Its sole purpose is to provide information for the photo owner and for proof of copyright.
A photo can never be duplicated exactly - even if conditions are similar.
I didn't say I was trying to duplicate anything. I was just observing the affect of f/x vs. x shutter speed. To me, that's the best way to learn. I'm a visual learner, the more pictures I can see and compare data to, the better technique I can develop.
P.S.- what color underwear may not have an effect, but the style certainly would! Let's compare a handheld shot wearing boxers vs one with a thong.