Some raw conversion tools — including, I believe, the one he used — “respect” the camera flag that denotes the use of the DR% settings and apply them to the underlying raw image as it is converted. The actual data in the raw file are no different than any other raw file, but the conversion software applies settings by default that mimick the effect that hte camera would apply to jpg files. (See my earlier link to an article by someone who tested this stuff.)
The concept is similar to what happens with film sims on Fujifilm cameras when you use them in raw mode. The sims (like, I believe, the DR% settings) do not alter the underlying raw image.
Although there is no direct evidence yet to support a "flag" (similar to a film sim that "mimics" what the camera would apply to JPGs), it does seem that C1 and Lightroom process RAW files differently depending on the DR mode -- and so the existence of a "flag" is plausible.
But assuming that theory is correct, C1 doesn't give the option to toggle it on or off (in contrast to a film simulation). So, if you use C1 exclusively, for all intents and purposes that data is permanently baked in to the RAW file. Once you use the DR mode, there's no recovering that lost data in C1. The software cannot "choose" (or permit the user to choose) to process the RAW file in a different way.
There is some “evidence” in the article I linked to earlier in this thread. Please take a look at it.
Also, regardless of what C1 does or does not allow you to do, my original point in all of this was that the DR% settings are not altering raw files and only alter the camera’s method of generating a jpg from the sensor raw data.
Feb 03, 2026 at 10:29 AM
Previous versions of gdanmitchell's message #16979572 « DR100% vs 200/400% »
