The center of the optical sight below the center of eye vision. Whenever I line up my actions relative to the center of focus (point on the screen) applicable to the object / target, the action is an adventure on an iron sight, or on an optical sight, focuses the center of the sight well below the object / target. This is inconvenient in twins, when using an optical sight with a high magnification - the target is beyond the scope of the optical review.
Exit from the action "sight" has the same effect, the focus of view remains above the object / goal.
According to the sensations in the game, the aiming process occurs without tactility. When I want to look through the sight of a weapon, I lose sight of the object / object of observation.
When you see a point in the middle of the screen - this is the focus of eye vision.
When I raise the weapon, the point on the screen is converted to "T" - they synchronize well.
But when I transfer the line of sight through the sight of the weapon, the "T" does not synchronize with the center of the sight of the weapon.
When the character's doll body does not lie horizontally - the head is above or below the legs.
The greater the slope, the greater the divergence of the centers of eye vision and rifle sight.