How to shake the black card in photography and what can I do?

Black card jitter is a technology in the film age, which solves the problem of uneven exposure through artificial occlusion. Black card jitter is not only to solve the problem of light ratio, but also to change the image of objects through time, mainly manifested as water and clouds.

Black card shooting accessories: tripod, pan/tilt, level, cable, filter, black card.

Black cards are the least valuable props in accessories. They can be made of non-reflective materials such as black cardboard, gray cardboard and suede leather, and the gray partition in the camera bag can also be used as black cards.

Filter is an important accessory in black card shooting, which is suitable for photographers with high technical foundation to transform objects by time. Among them, gradient grey mirror and subtracter are commonly used, which are sharp tools for shooting black cards.

The level meter is mainly used with shift lens and super wide-angle lens to straighten the picture;

Second, as shown in the figure.

Light up the sky for 6 seconds and the lower part for 30 seconds respectively.

According to the results of ground photometry, the sky is overexposed.

The exposure results are measured by the sky, and the ground is dark.

Change the exposure to manual mode and set the shutter speed to 30 seconds.

Open the screen on the back of the machine to locate the black card occlusion.