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Why are f1 2 lenses so expensive?
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anonymous
Why are f1 2 lenses so expensive?
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anonymous
An f/1.2 lens had much more glass than say an f/2.8, e.g. a 50mm f/2.8 lens would have an effective aperture of 25mm, while an f/1.2 50mm would have one of 41.7mm. This means the optical elements had to be much larger for an f/1.2 lens.
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