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Joined on Sep 19, 2007


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topstuff: All very lovely, but this is'nt really an F2.8 lens is it, compared to APSC or FF?

What would be the equivalent APSC lens? A 17-50 I guess? And if my understanding is correct, would this 4/3 lens have to be a F1.4 to have the same light gathering as a F2.8 in larger sensors?

As said somewhere below, I don't think it is a simple as simply doubling the focal length to get a "FF equivalent" and keeping the max aperture the same.

I am not sure if this really a f2.8 as we know it. I am sure the people at DPR can clarify !

A lovely thing though I am sure, especially with an OMD EM5.

Light gathering wise (which is acutally the real meaning of F-stop) it is a 2.8. It will give you the same exposure parameters as a 24-70 F2.8.
Some people are talking about depth of field equivalence. In that sense, it is equivalent to 24-70 F5.6 on FF.

Link | Posted on May 21, 2012 at 07:14 UTC

They should have included this screen on the GX1...

Link | Posted on Apr 5, 2012 at 05:36 UTC as 83rd comment | 1 reply
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