How did they make the 45mm 1.8 Olympus so small?

Started Feb 4, 2013 | Discussions thread
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zenpmd
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How did they make the 45mm 1.8 Olympus so small?
Feb 4, 2013

How did they achieve this? Its a bit of a miracle. Conversely, why the the Pansonic 25mm quite big? Is it the wider apeture?

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