So I think I understand the articles. But don't ask me to explain it or I
would have to admit that I don't completely understand.
But I gather from the second article that there is RAW image software that
is better than others at converting E-M5 RAW files. And if ACR is the best
and can be adjusted to process the E-M5 data better than the default, how do
you "fix" ACR?
I did like the Tri-X/TMAX analogy. After spending hundreds of hours in
darkrooms processing B&W film, I know all about the exposure characteristics
of both films.
Johnie Stafford
jms@xxxxxxxxx
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> -----Original Message-----
> From: Moose [mailto:olymoose@xxxxxxxxx]
> Sent: Sunday, December 02, 2012 3:04 PM
> To: Olympus Camera Discussion
> Subject: Re: [OM] Early impressions
>
> On 12/2/2012 4:05 AM, Chuck Norcutt wrote:
> > Thanks, Mike, that's really interesting. The EM-5 equals or exceeds
> > the 5D (and 7D) in every category except that the 5D holds a one stop
> > advantage in low light noise. Another big surprise though it that the
> > entire EM-5 ISO range seems to be overstated by about one stop. ISO
> > 200 is really 100, 400 is 200, etc. I'm wondering how this relates to
> > the camera's own metering measurement vs that of an external meter.
> > Could make a big difference in, say, using an external meter for
> > studio flash work. Not a problem as long as you know it exists.
>
> That's why DxOMark gives you a plot of camera ISO vs. sensor ISO. It
doesn't
> reveal that a camera manufacturer is "fudging" or "lying." It tells you
how the
> two different kinds of ISO, which are legitimately determined in very
> different ways, compare. That's all. It's not an exposé. It's just
technical
> information. So far as real photography practices go, we care a lot more
> about camera ISO.
> - Ctein
> <http://theonlinephotographer.typepad.com/the_online_photographer/20
> 12/09/why-iso-isnt-iso.html>
>
> Much more detail, including how it relates specifically to the E-M5.
> <http://theonlinephotographer.typepad.com/the_online_photographer/20
> 12/10/raw-is-not-raw.html>
>
> In my tiny pond, I'd say that in actual practice, shooting the things I
shoot, the
> E-M5 ISOs are about the same as 5D and 60D and the compact cameras I
> have. No tests, just moving from one camera to the other and seeing the
> image files that come out.
>
> If It Moves ... Moose
>
> --
> What if the Hokey Pokey *IS* what it's all about?
> --
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