GX7 vs E-M1 IQ difference?

Started 7 months ago | Discussions thread
Baron LaCat
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Image Quality Stops
In reply to Jorginho, 7 months ago

Jorginho wrote:

and it’s only -1/3 of a stop in overall image quality behind the 16-Mpix Sony NEX-6.

This STOP jargon really confuses me !!!  How is image quality measured in Stops ???

And when folk talk about Stopping Down (with a lens) what do they mean ?

(I almost grasped the idea of Stopping Down on a lens, and now we talk about IQ measured in Stops)!!

And if we can Stop Down on a lens, can we also Stop Up on the lens ??

Thanks in advance

Baron

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