Ghost. Canada

Often it's a small point on the photos, like hovering metal ball. At least - this is quite a big blur. Color, brightness and the presence of a highlight depends on the color of the reflected light source, background shooting and drop form.

Shape, color and density of pollution may vary depending on the source of the contamination and its nature. This can be as a desired pattern on the glass, and random.

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Most often this artifact is called skayfish if the lens gets a passing bird or insect. It is based on the discrepancy between the speed of the video and the frequency of the flapping of insect wings. Essentially, each video drops a few strokes of the wings of an insect, which when viewed looks like "arrow", provided with long protuberances. The motion of the insect by its translucent body seems to "boom" and vibration of the wings give the appearance of bumps.

A variety of visual illusions (the so-called "sensory illusions additions"); is the formation of illusory images, as a basis which are the details of the real object. Thus, the vague and obscure the visual image is perceived as something distinct and defined — for example, figures of people and animals in the clouds, the image of a man on the moon, "a hidden message", audible when you reverse the audio recordings, the shadows formed by leaves or complexes of objects in certain lighting (sometimes at a certain angle).

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