OMD E-M1 vs Sony A-7, What's the Difference?

Started Oct 23, 2013 | Discussions thread
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blue_skies
blue_skies Forum Pro • Posts: 10,133
Re: Lenses look about the same to me...

Ulric wrote:

blue_skies wrote:

The A7r has 36Mp as well as CIZ. 36Mp allows for a 2x zoom, and CIZ would double this again.

CIZ is digital zoom, right? So the original 36 MP resolution becomes ~2 MP.

No, CIZ is a 'pattern enhancer'. It extrapolates the image information by using heuristics, and it can work surprisingly well. Some times it fails, but often it does work almost as good as high-end up-samplling software programs do - those do not extrapolate, but 'add' new data.

Using CIZ does not lower the resolution, but it can lower the IQ.

http://www.sony-asia.com/microsite/assets/cyber-shot/2011h2/clear-image-zoom/

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Cheers,
Henry

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