Sentinel-2 MSI reader in the Optical Toolbox does not currently apply radiometric band offsets for baselines above 05.11. This is because the Product Specification Document (PSD) version has been upgraded from 14.8 to 15. These versions are internally represented as “148” and “15”, and radiometric offsets are only applied if the psd version is at least “147”.
See the issue I raised on GitHub:
Before this is officially fixed, one possible solution to users is to replace in the metadata file MTD_MSIL1C.xml the first occurrence of the string psd-15.sentinel2.eo.esa.int with psd-14.sentinel2.eo.esa.int.
Hello SNAP Team
Many Thanks for sorting out this problem so timeously -
We appreciate all your wonderful products and enjoy the programmes
(= SNAP) which you have produced to help us analyse them.
Many Regards for great products Rob Smith