XF56 f1.2 released and specs

Started 6 months ago | Discussions thread
malcolml1
Regular MemberPosts: 121
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Re: XF56 f1.2 released and specs
In reply to hellocrowley, 6 months ago

Ok, I should have said it provides the same amount of light per unit area of the sensor....surely????  Or are you saying that, for a given ISO and f number the exposure time will be shorter for a f1.2 lens on full frame as opposed to an f1.2 lens on an APS format camera??

In other words, if what you say is right then the following worked examples would be true (all other parameters being constant):

FF sensor at f1.2 and 1/125 sec exposure would work out as f1.2 and roughly 1/90 sec exposure on the X series APS sensor

Or FF sensor, f2 at 1/125 sec = APS sensor f2 1/90 = HTC sensor f2 at  1/15 sec (assuming the HTC is about 1/6 linear dimension of APS - I don't know the actual value).

Is that what you are saying?

Malcolm

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