Hello everybody, I’m fairly new still to photography as a hobby, but am an avid Leica SL shooter. I switch between seven different Leica SL and M lenses on my SL. But I’m hoping perhaps SOMEONE can help me figure out why my SL/ 24mm Lux pics are getting purple spots in the center of the photographs. This doesn’t happen with any of my other lenses on the SL. Only with the 24mm LUX, and I actually don’t recall this being an issue when I first bought the 24mm. It seems to be something that only developed after about 4-6 months of owning the lens. Could it need a proper cleaning? It appears clean to the naked eye.