An important factor affecting lie angle is the position of the shaft when it is gripped. A person who grips the shaft with the butt on the pad of the hand (incorrect grip) will require an upright adjustment. While if the same person grips the shaft at the base of the fingers (correct position) he may not need any adjustment to the standard lie angle. I've seen this many times where a golfer is fitted with an upright adjustment to their irons due to incorrect grip. When I instruct them change to a proper grip the lie angle has to be changed.
An important factor affecting lie angle is the position of the shaft when it is gripped. A person who grips the shaft with the butt on the pad of the hand (incorrect grip) will require an upright adjustment. While if the same person grips the shaft at the base of the fingers (correct position) he may not need any adjustment to the standard lie angle. I've seen this many times where a golfer is fitted with an upright adjustment to their irons due to incorrect grip. When I instruct them change to a proper grip the lie angle has to be changed.