Hello, I have two IKONSO images (blue,grn,red,NI,pan) of my study area in Chiapas.  They are two images that need to be mosaic togetaher because the study site encompasses part of both images.  However, when I look at the images in ENVI i see that they look very different.  One image is very crisp and brighter than the other one. The one that is not crisp looks like it has haze covering the entire image.  I am assuming that it means that the images have diferent reflectance value (taken at different times in the day) and therefore will affect my clasiifcation results.  Is this correct? How can I make them similar? and is reflectance the correct term for that diference?  I am learning as I go so I appreciate any info, tips or help with this. Thank you for all your help. Colibri