I get this behaviour but also some additional odd behaviour. Also, I see now there is some visual distinction for precision mode, the bar appears to widen.
On the exposure slider:
-If I hold shift and use the scroll wheel A) the increments go in .1, it would be great if shit+alt gave increments of .01, that would be ultra helpful. B) the slider bar visually oscillates the whole time between the two appearances while holding shift. This does not affect the operation, but is definitely unsettling and distracting, gives the impression something is going wrong.
-regardless of which mode I use I have trouble getting increments of .01, seems it likes to jump by increments of.02
In terms of the black slider there appears to be the exact nonsensical operation mentioned by morgan above. When entering into precision mode the increments are so small that they don't have any effective impact.
I guess these are two separate issues.
What would be great.
1) if the + & - buttons had key modifiers that allowed for .01 increments on exposure. This would be excellent. perhaps Alt+
2) If the scroll wheel+shift also had a keymodifier for .01 increments, Alt+ ? (theme emerging). And visually didn't signal the coming apocalypse
3) If the black slider had some precision modifier that made sense, perhaps 0.2 x of the standard dragging increment would be great. Again perhaps with both a drag and scroll wheel solution including Alt+
Of course it would be great to see this approach to the whole exposure tab. Given the lack of precision with dragging the sliders focusing on a scroll wheel approach seems most attractive. I think modifiers for the +&- would also be great. Further I think the .02 x granularity for sliders with high value ranges (such as black) would be a great general solution.
I only ask becuase I have no idea how difficult this would be to implement. I see that there is some limited implementation for additional granularity. However it really could be so much better, more consistent, and also incorporate the scroll and +&- consistently. I would absolutely love to see this if only for the exposure section. But again I have no idea how long something like this takes.