On recent cameras: EM-1, XT-1, A6000 ...

Started Feb 12, 2014 | Discussions thread
captura Forum Pro • Posts: 23,887
Re: Res : On recent cameras: EM-1, XT-1, A6000 ...

spacemn wrote:

SirPalomid wrote:

Well, I understand what you're saying. I'm not saying that Sony is an awful camera, and somebody cannot love it or something like this. Just to point out that "1 stop difference" it's not what I've experienced myself, and "Fuji overstates ISO" is exaggerated - almost everybody do so, Sony and Olympus (in E-M5 for sure) too. If I had NEX right now, I'd happily perform this comparison test for you.

Although I have Panasonic GX7 and Canon 6D, so I may do test with them (with Panasonic as reference as "right ISO"), and if I'm wrong, and difference is really 1 stop, than I apologize.
I didn't want to harm you in any way with my words, so excuse me.

When it comes to Olympus E-M5 overstating ISO vs Sony, then you can easily see this in DXOMark (Measured ISO vs Manufacturer ISO):


Olympus are almost as bad as Fuji in overstating the ISO, at least 2/3 of a stop at high ISOs compared to Sony.

Panasonic are pretty close to Sony. Yes all overstate a little bit, but Olympus and Fuji are particularly bad at doing this. They are very conscience in market themselves with a certain x-factor The worst part is many reviewers do not take this trivial fact on overstating ISO into account.

I've actually posted that very same chart from DxO onto discussions on the M43 forum, several times. Every time I did that, it ended the discussion; no more posts resulting.

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