What does Lightroom do to my raw files?

Started 4 months ago | Discussions thread
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as1mov
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What does Lightroom do to my raw files?
4 months ago

Hi,

I have a D600 and shoot RAW and I am used to post-process my files with Lightroom 5.

I understand the image I see in LR is in any case always a JPEG calcualted from the RAW data based on the settings I have choosen (exposure, highlights, blacks, shadows etc.).

It is not clear to me however how LR takes advantage of the wider range of data in the RAW file since the JPEG has a smaller DR.

Assuming for the sake of aurgument that RAW data has 14EV and JPEG only 6EV, how does for example LR recovers the highlights? I mean the Jpeg histogramm shows blown out highlights, pushing the highlights or whites slider to the left I see details magically appear. That means looks in the RAW file in the tonal values to the right of the upper limit of the JPEG DR( say +3EV) and uses those values to reconstruct the blown out areas?

Thanks.

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