more noticeable.
In one image Diana may appear only slightly shorter.
British monarchy history
In another image Charles appears to stand substantially above her.
In a further photograph the visual relationship appears nearly level.
Photographs supply an incomplete measurement of actual height.
Positioning, posture, footwear, perspective, camera angle, and the presence of a raised surface can alter the way height appears.
In the case of Charles and Diana one particular detail becomes clear when photographs from the same setting receive careful examination.
Diana biography book
Diana’s Position in the Balmoral