09-07-2020, 06:19 AM
When focusing the camera lens, the key is to look at the corneal reflection (CR), not other parts of the eye such as the eyelashes or iris.
The goal is to adjust the lens until the CR—the small, bright dot of light on the eye's surface—appears as small, sharp, and bright as possible. If the lens is out of focus, the CR will look larger and more blurry. Think of it like using a magnifying glass to focus sunlight: you want the point of light to be as tiny and intense as possible.
Note: Please note that a focused corneal reflection may result in a slight blurring of the actual pupil of the eye.
The goal is to adjust the lens until the CR—the small, bright dot of light on the eye's surface—appears as small, sharp, and bright as possible. If the lens is out of focus, the CR will look larger and more blurry. Think of it like using a magnifying glass to focus sunlight: you want the point of light to be as tiny and intense as possible.
Note: Please note that a focused corneal reflection may result in a slight blurring of the actual pupil of the eye.