Here's a comparison table of the base game Field of View (FOV) min/max values versus the calibrated (extra max) values. Since higher FOV values imply less magnification, you can see that for most sights the base game provided more zoom than it was historically accurate to have. To lessen the impact of this, you can still use the extra zoom available through the mouse scroll wheel in these two versions of the mod to reach the extra min FOV values.   The first version lets you zoom in to