Good morning I am using envi 5.1 and i have this problem, in a landsat image 2015 i cant see the metadata "date" look the jpg 1 this happens whit "time" and "security" metadata, in all 2015 landsat 8 images, did u know why?. jpg1: http://www.subirimagenes.com/otros-jpg1-9400018.html And now using flaash the band 6 have 0 values, i do the same whit imagens landsat 8 2014 and all is ok, look the jpg2, (the combination is band 6, band 5 and band 4). jpg2: http://www.subirimagenes.com/otros-jp... in the jpg3 u can see the flaash parameters: http://www.subirimagenes.com/otros-jp... Thank you exelis, you always answer me Luis Alejandro Torrez Geografo