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Old 3rd November 2018
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Bassman51 Bassman51 is offline
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Re: New Olympus Patent: 400mm f4.0 MFT Lens

A 100-400/4.0 lens would need a 100mm diaphragm pupil - that's a seriously large lens. Bumping the max aperture to 5.6 drops it to 71mm, which might use a 77mm filter.

Remember, the 40-150/2.8 plus the 1.4TC yields a 56-210/4.0 lens which weighs in at over 2 lbs. The Panny 100-400/4.0-6.3 is just under 2 lbs.
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