> It was my understanding (from where I don't know) that ACR and some
> other converters try to go the manufacturer's converters one better by
> extrapolating beyond the clipped channel. How they do that and how
> successful they are I don't know.
ACR is better at it with Canon files than Olympus/Panasonic files. In fact,
they JUST fixed a known bug in the Panasonic DMC-L1 converter a couple
months ago. Like, duh. My testing with Capture-1 shows a far better color
across the boards--including the recovered highlights than ACR when working
with Olympus files. DCRAW will definitely send the recovered highlights
into a martian orbit. You never really know what you are going to get, but
most likely Orson Wells will be involved.
Color integrity in the highlights changes quite substantially with Canon
files if you change from AHD to EAHD to HPHD to VNG4. Each one of these
combines the sensel dump (raw file) in a different manner. BTW, with
Olympus and Panasonic files, we have to always use VNG4 or varients because
of the dual-colored green sensels. If you don't use VNG4 you will end up
with the maize patterns.
AG
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