Yup … “lens flare.” The bane of every pro photographer (who strives to eliminate it … along with the “cicada sound-effects” from every Western movie, where a close-up of the Star’s face is shown precisely at the Second Plot-Point …).
“Lens flare,” of course, is caused by (unwanted …) light striking the lens, thereby “absolutely ruining the shot” that the aforesaid lens was striving to take … but doing so in a way that audiences (somehow) still managed to “fall in love with.” (Perhaps because some harried film-editor said, “that’s the only version that we have! Print it and let’s move on!! It’s two o’clock in the morning!!”)
“Please,” (he said, feebly … like Don Quixote staring-down a windmill) “don’t try to ‘replicate’ Lens Flare! Avoid it, at all costs! Get rid of it!!” “Bad dog! No biscuit!!”