What should I pay attention to in vr panoramic shooting?

Adjust the focal length of the fisheye lens to the longest focal length, and measure the light as close as possible to the main body, then determine the exposure value measured at this time, and then take pictures from the beginning as required.

In the case of 360 panoramic production, strong light enters the lens, which leads to the blackening of the subject. At this time, forced light can be used to fill the subject (for example, in the daytime, strong light is needed to fill the light and enlarge the aperture to blur the scene, and the synchronization speed of strong light is low, so a medium gray (nd) filter is needed to reduce the light of the lens).

First, the right focal length.

Some people think that when taking panoramic photos, the viewing angle should be as large as possible, so the shortest focal length (wide-angle lens or wide-angle end of zoom lens) should be used, so the number of photos spliced is less. In fact, this is a misunderstanding. It saves trouble when shooting and saves trouble when sewing. Because the wide-angle lens has a strong perspective effect, especially at the edge of the picture, it is easy to distort and it is difficult to achieve seamless stitching. But wide angle has the advantage of wide angle, which can form a stronger sense of perspective. For example, the picture above is Canon.

In addition to panoramic perspective, the shot works also have a strong perspective relationship, so you can use the medium focus or telephoto end with small deformation when shooting, and it is not appropriate to change the focal length in the middle of shooting. Commonly used lenses are EF35mm, EF50mm and ef 85 mm.

Second, the exposure parameters

Nowadays, many digital cameras have special panoramic modes. In this mode, the camera will automatically set the exposure parameters according to the requirements of taking panoramic photos. For cameras without panoramic function, the following points should be noted:

① Average metering is used for metering, and manual exposure or AE lock is used to lock exposure parameters during exposure. Settings such as aperture, speed, ISO, resolution, etc. cannot be changed during the shooting of the same group of panoramic photos;

② Use fixed white balance. Using automatic white balance may cause different photos to have different tones.

Third, the shooting method

When shooting in a certain order (from left to right or from top to bottom, etc. ), it is best to use a tripod to rotate smoothly. Pay attention to the vertical axis when shooting in rotation. When shooting left and right or panning point by point, pay attention to the same camera height and angle. Generally, do not use flash, which will cause low light and far darkness. There must be an overlap between two adjacent photos when shooting. Some digital cameras of Canon, Casio and other brands have auxiliary prompts on LCD screens in panoramic mode. Avoid shooting when the light conditions change dramatically (such as clouds covering the sun), so as to avoid too much difference in screen exposure. When shooting, you should also pay attention to avoiding moving objects (such as vehicles and pedestrians) at intersections. Although choosing a clearly marked position as the splicing point is conducive to the identification and splicing of some automation software, we still suggest choosing a position that is not clearly marked and easy to mix as the splicing part, such as water surface, distant mountains, etc., so that it is not easy to see the seams when splicing.