I've heard a lot about differences in sensor generations - from XE-1, to XE-2, through X-E3, and now X-T3. Obviously RAWs were never an issue, but the JPEGs were quite different with a lot of people attesting to the unique look of the first generation. Can someone point me to a link that discusses these differences in the "look" across different sensor generations in some detail? I am e.g. interested in what happened to the "waxy look" of portraits that first came up with the X-E2 generation. How bad is the "waxy look" issue with the X-E3 generation? Is it the same with the latest sensor on the X-T3? There was also some talk of the X-E3 generation sensor not being ISO invariant. But I don't know much about that and how that effects the quality of JPEGs. I would appreciate if you point to links, or talk about differences in the look of JPEGs and portraits between these different generations. Thanks!