Control of stereoscopic photography

When expressing the same scene, the larger the shooting interval, the stronger the three-dimensional effect, but the worse the clarity. In a three-dimensional picture, images with too large a three-dimensional depth of field will form ghost images or flicker of graphics, causing psychological discomfort.

However, the three-dimensional sense of the picture is the result of the simultaneous action of geometric optics and visual psychology. Therefore, using certain laws of stereology, the range of the three-dimensional depth of field can be appropriately changed, and its control laws As follows:

1. When the foreground and background are more important in the picture, the depth of field should be strictly controlled. If the front and rear backgrounds do not have complex textures or important details, the shooting interval can be increased to increase the shooting distance. Depth of field

2. When the foreground and background are in the center of the picture, attention should be paid to controlling the depth of field. When they are in the periphery or corners of the picture, the three-dimensional depth of field can be relaxed.

3. When the contrast between the foreground, background and background is strong, the three-dimensional depth of field should be controlled. On the contrary, the three-dimensional depth of field can be relaxed.

4. When the foreground and background have obvious details or vertical linear structures, the three-dimensional depth of field should be strictly controlled. On the contrary, when the front and background are mainly horizontally distributed regular patterns, the three-dimensional depth of field can be greatly relaxed. .

5. When the background is a secondary part and is mostly blocked by the foreground, it is allowed to significantly widen the three-dimensional depth of field of the background, or calculate the depth of field based on scenery closer to the subject.