It is very clear that they are not photographers, just a group of software
engineers.
C.H.Ling
----- Original Message -----
From: "ws"
> So this means that if a camera actually has a higher dynamic range
> than another camera, the ISO would tend to be lower than the other camera?
> I'm still not sure I understand how DXO determines the exposure
> with this method in the first place, only how the results are interpreted.
>
> Therefore, I am assuming they don't meter at all, only set the camera
> at a specific ISO and measure the sensor range, then derive the
> equivalent ISO. That means how the metering systems works is not
> taken into account relative to actual use.
>
> Wayne
>
> At 05:01 AM 1/30/2009, Tom wrote:
>>>2009/1/30 Chuck Norcutt
>>>That's interesting. DPReview has been reporting actual ISO test results
>>>for a long time. DXO says the Canon 5D's ISO 100 is actually 92.
>>>DPreview reported it as 125. And, of course, Canons says it's 100.
>>>Who's right? I doesn't make any difference until I have to get out the
>>>external meter for flash.
>>
>>I came across this discussion elsewhere a couple of weeks ago, which may
>>be
>>relevant:
> <snip> discussion
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