I'm looking at land cover in an area of South East Asia. I pulled down Sentinel 2 imagery for Feb 2017, and used the QGIS SCP plugin to complete the land cover analysis, as per this tutorial: https://fromgistors.blogspot.com/2016/09/basic-tutorial-2.html. Wanting to better understand which areas of lesser growth were plant growth recovering from cultivation, and what were otherwise sparse forest, I took a look at some older satellite data, only to find it looked very different. I've included examples below using using Sentinel bands 4,8 and 12, all of which were processed in identical ways.
If this is indeed just a difference in the visual output of SCP/QGIS, I would love to know how to get them more comparable.