I owned 80s Summicron on Leicaflex and it was faraway colorful than Summitar and Elmar. It was good as all other Leitz glass under dim light or subdued light but when you take street shots , flat colors were exploding. And plastic colors were looking like fluorescent. But whatever the condition , skin colors were amazing. I think canadians have other Color MTF preference. Extremelly sharp and whatever you shoot , there is something calls you inside of composition , a window , marble wall etc. I always prefer Sum class lens to El class lens. I studied Leica since when I was 14 years old and reading Amateur Photographer and Photo Technic. Digital ruined everything.