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Senior Member
Lenses and Aperture Mechanisms
Ok I must admit I have not taken a lens apart nor have I looked a schematic.
But I imagine a it consists of a lens or series of lenses ahead of an aperture mechanism.
Now I know this may seem simplified but it is my basic understanding.
So here is my question.
If the aperture of a lens is not a product of the glass but of the mechanical opening and closing of the aperture mechanism.
Why cant all lenses have an aperture mechanism that opens to 1.8 or 1.4.
I know it is a lot more complex than this but see if someone can explain in in simple terms.
"If you can
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