On 2/12/08, Toralf Lund <[EMAIL PROTECTED]> wrote:
> Adam Maas wrote:
> > On 2/12/08, William Robb <[EMAIL PROTECTED]> wrote:
> >
> >> ----- Original Message -----
> >> From: "Thibouille"
> >> Subject: Samples, samples and... alternate K20D (K10D?) handgrip !
> >>
> >>
> >>
> >>> http://www.pentaxforums.com/forums/pentax-dslr-discussion/20506-few-k20d-samples.html
> >>>
> >> >From the blog:
> >> " Last issue is to find the true "base iso". If 200 then 1600 is really 
> >> only
> >> equiv to 800 on the K10."
> >>
> >> Is it just me or is this a bullshit statement?
> >>
> >>
> >> William Robb
> >>
> >>
> >
> > Complete BS. Native ISO only determines which ISO offers the best IQ
> >
> > and widest dynamic range,
> I think what he's talking about (i.e. wants to find out) is what the ISO
> rating is if you actually measure it the way the ISO says it should be
> measured. Which is something different from the "ISO values" quoted by
> camera producers (we have discussed this before, haven't we?)
>
> The rest of what he's saying still doesn't quite make sense, though...

Except that only applies at native ISO, not at any other. The ISO
standard only allows for a single ISO speed (being a film standard and
all). It still doesn't affect what he's saying.

-- 
M. Adam Maas
http://www.mawz.ca
Explorations of the City Around Us.

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