Exposure is always allowed, that's not just a creative adjustment, it's like changing your ISO. Sharpness is also allowed, that's just signal processing, not colour related.
Contrast, yeah, that's locked. I'll explain why...
Thanks! I thought if you tick "creative adjustments" it will break log curve, but..
Yes, it breaks the log curve, specifically the dark strength adjustment is the one responsible by default, but any colour related slider will break the log encoding -
If you want to export a pure log encoding from MLV App to grade with other tools, you should disable creative adjustments.However if you want to grade log within MLV App, or use a manufacturer's LUT to convert their log to rec709 in MLV App, and then grade on top of that, you should allow creative adjustments. You don't need to care about breaking the log curve in this case.But I think MLV App's new AgX is going to do a better job than manufacturers' log to 709 LUTs anyway

And I recommend combining that with MLV App's filters, especially the first three options:
