[mst]

So we are there again, some people will not see the benefit with small lenses. Good, they don´t have e to buy them.

That wasn't the point really. I own and regularly use small lenses. And some even aren't FF lenses

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You can also ask - why is there a market for a mini cooper? Small, expensive ...

...but also fast

Not by full format car standards. ;-)

If full format car standard is a straight highway, then no, not by that standard