replicating Oly colors in LR... impossible?

Started Jul 22, 2012 | Discussions thread
assaft
assaft Senior Member • Posts: 1,388
Re: replicating Oly colors in LR... impossible?

Hi gollywop,

Thanks for the guide!

In the guide you say this -

You can make different targets for different sunlights (bright daylight, cloudy, overcast, shade). I've done this but find that a well-made target for typical daylight (5000-5300 °K) makes an excellent overall profile.

And previously on this thread you said:

My interest is in beginning with an image whose colors are appropriately close to the originals. I do this using custom camera profiles, shooting raw, and using a WhiBal card to set WB.

I'm trying to understand the workflow -

In the field you ETTR using UniWB, and then in ACR you apply a general color profile (created primarily for 5000-5300K but used under any light condition) and you override the default WB of the profile/UniWB based on a snap of the WhiBal?

btw, as far as I know color profiles improve the accuracy of the raw converter's color reproduction, but they do not take the manufacture jpeg engine into account at all. So if the Oly jpeg colors are hard to achieve because they are tweaked and unnatural (e.g. due to some boosted reds), a color profile won't be able to match them (and is not supposed to). I wonder if there is a tool that can learn the color tweaking automatically based on examples. I mean, a tool that will be trained on pairs of RAW+JPEG (created by the manufacture (Oly) jpeg engine), and then will generate an ACR color profile that produces the closest color rendering when converting future RAW files (based on statistical machine learning methods). My feeling is that if the color tweaking in the jpeg engine is static then it is feasible to develop such tool; if it is dynamic (e.g, based on recognition of the type of scene) it would be quite complicated.

Thanks again,

Best,
Assaf

 assaft's gear list:assaft's gear list
Olympus PEN E-PL2 Olympus OM-D E-M10 Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Panasonic Lumix G 20mm F1.7 ASPH Panasonic Lumix G 14mm F2.5 ASPH +6 more
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