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Here I tried to show the relation between the number of elements, the number of (element) groups, and weight of lenses. The set had to be filtered for lenses under 5kg otherwise it just wouldn't fit very nicely. There weren't that many > 5kg but I was still surprised
The site of the dot also shows how many lenses in the set there are with that combination of elements/groups
As expected, the more the heavier, yet most are of course in the < 1kg range. There will be a plot with the weight distribution. It also shows how many elements a group tends to have
I'll post the list of lenses heavier than 5kg in a bit, for shits and giggles