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Forums > Back > Two new olympus pro lenses coming
#13
Quote:Of course it isn't. The size of the hole is the same as with a FF 600mm f8. The cone of light gathered is the same too. So how can it gather more light?
 

f/4 on MFT meters the same as f/4 on FF. Similarly an f/4 lens on APS-C or medium format would meter the same. The sensor size is irrelevant.

Relative to the sensor size, the amount of light hitting the MFT sensor is the same as a f/4 would be on FF. Consequently, the exposure time is similar.

This is what I meant to say.

 

What really matters is that a 300mm f/4 MFT lens acts as a 600mm f/4 FF equivalent lens in terms of exposure and f/8 in terms of DOF. That makes it for a hand hold-able system which is not the case when considering FF.
--Florent

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Messages In This Thread
Two new olympus pro lenses coming - by frank - 02-12-2014, 08:45 AM
Two new olympus pro lenses coming - by frank - 02-12-2014, 02:19 PM
Two new olympus pro lenses coming - by Sylvain - 02-12-2014, 04:41 PM
Two new olympus pro lenses coming - by Guest - 02-12-2014, 09:04 PM
Two new olympus pro lenses coming - by Guest - 02-13-2014, 02:29 PM
Two new olympus pro lenses coming - by thxbb12 - 02-13-2014, 04:26 PM
Two new olympus pro lenses coming - by PhotoGMan - 02-22-2014, 05:03 PM
Two new olympus pro lenses coming - by Sylvain - 02-24-2014, 08:52 PM
Two new olympus pro lenses coming - by felix - 02-25-2014, 01:33 PM
Two new olympus pro lenses coming - by thxbb12 - 02-25-2014, 02:43 PM
Two new olympus pro lenses coming - by thxbb12 - 02-26-2014, 07:09 PM
Two new olympus pro lenses coming - by thxbb12 - 02-27-2014, 07:59 AM
Two new olympus pro lenses coming - by frank - 03-04-2014, 04:59 AM
Two new olympus pro lenses coming - by thxbb12 - 03-04-2014, 09:38 PM
Two new olympus pro lenses coming - by thxbb12 - 03-06-2014, 09:09 AM

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