Hi Mile,
I presume the purple color in the mid-picture owes more to the lens than to the
sensor. I may be wrong of course.
In LR I just have to click once to get rid of this artifact when perceived -
and it doesn't happen so often with the fuji lenses I use.
It was much trickier with legacy lenses I have to admit, but the same applied -
somewhat differently - with the pans, the Nikon, and the Olies before.
Amities
Philippe
Le 10 déc. 2016 à 23:48, Mike Gordon via olympus <olympus@xxxxxxxxxxxxxxxxx> a
écrit :
> Philippe writes:
>
> <<<I'm not of what you mean by watercolor effect in landscapes.
>
> Hi Philippe,
>
> If you search watercolor/x-trans I am sure you will find many examples.
> ACR/LR was the by FAR the worse converter for this effect early on but has
> improved (still not the best).
> That be said, this is pixel peeping at high mag and does not appear to effect
> most modest sized prints (reportedly print very nicely) or most web images.
> This issue seems baked into the Xtrans design, though the software evolved
> enough to make it less an issue. Color filter arrays (CFA) have trade offs
> by nature. Xtrans designed so the "green" raw channel has more coverage but
> less positional symmetry than in a Bayer sensor and as a direct result there
> are less high-frequency luminance "miscalculations" in the interpolation,
> giving lower noise in raw conversion-(thus placing a premium on performance
> at high ISO's over base ISO). The larger B to B and R to R distances
> necessitate a larger chroma smoothing radius resulting in "watercolor"
> effects or artifacts.
>
> Here is one example I had posted in the past:
>
>
> http://dl.dropboxusercontent.com/u/5540407/PNmoire.jpg
>
> If one uses a converter to totally avoid this, the trade-off is that you can
> get tiny, red-green speckle artifacts in very high contrast areas,
> particularly with specular highlights.
>
> Again all this is now largely a pixel peeper issue and one persons artifact
> is another's "organic rendering" when viewed at normal viewing sizes.
>
> Feel free to proceed full speed ahead, ignoring all the above, Mike
>
>
>
>
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|
