EXR Confusion not fully resolved

Started Jan 25, 2014 | Discussions thread
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Kim Letkeman
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Re: the data is there when it should be, and not when it should not ...
In reply to Timur Born, Jan 27, 2014

Timur Born wrote:

Yes, but the original idea about the EXIF tags was that there should/might be a tag that tells the raw converter whether to turn the two 6 mp halves present in the RAW file into a 12 mp (HR) or 6 mp (SN) image. Obviously this information is hidden, else we could just edit the tags to see how the raw converter behavior changes.

Not really hidden ... if there are two halves stored, then the converter follows the dynamic range setting to choose its algorithm ... 100 is binning if M size was shot and create a large image if not, dr200 is hardware blend if M size and software hack if not, and DR400 is the same as DR200 with different curves ...

There are probably other cues that can be used to get even closer in RAW ...

I'm not sure how more info would help ... although one supposes that special fields to signal "intent" couldn't hurt ...

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