GX7 vs E-M1 IQ difference?

Started Dec 17, 2013 | Discussions thread
Hokuto
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Re: Image Quality Stops
In reply to Baron LaCat, Dec 18, 2013

One of the best short histories of the use of the term "stop" in photography can be found at the link below:

http://photo.stackexchange.com/questions/8245/where-does-the-term-f-stop-come-from

The important thing to remember is that every full-stop of change represents a doubling or halving of the amount of light admitted through the shutter (depending on which direction you move along the number series). Each of the values in each series represents a full stop, but modern aperture rings and electronic shutters often offer the ability to choose intermediate ("continuously variable") shutter speeds and apertures.

shutter speed: 1   1/2   1/4    1/8    1/15    1/30    1/60    1/125    1/250   1/500 . . . .

Aperture (iris) opening: f1    f1.4    f2.0    f2.8    f4     f5.6     f8     f11     f16      f22 . . .

ISO: 100    200    400    800    1600    3200    6400

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