I agree with Thomas,
Originally Posted by Thomas Bertilsson
And might add... Scenario 1 is the easiest.
- Expose more = more shadow detail.
- Develop less = less contrast.
Both are problems you wanted to solve - solution to those problems.
We can save Zone System technique for later... even without full calibration, understanding it will make you more confident in the exposure you choose and the development time you give.
There's nothing harder to solve on a negative than empty shadows, while it would have been so easy to fix in the camera by giving enough exposure for the shadows when you shot.