How to use polarizers? Use of polarizers

CPL polarizer use skills, practical explanation of CPL polarizer use skills.

Install the filter correctly: Screw the filter onto the lens, taking care to keep it clean and avoid touching the lens with your fingers. Set the shutter speed:

The polarizer can saturate the colors and reduce the amount of light entering the lens, so you can set the shutter speed to ensure normal shooting. Rotate the polarizer: choose the composition, rotate the polarizer, the color of the sky changes very much, you can change the angle and experience the influence of different rays on the work of the polarizer.

1. Install the filter correctly: Screw the filter on the lens, pay attention to keep it clean, wipe off the dust carefully, and avoid touching the lens with your fingers. Then turn the polarizer slowly and you will notice the change in the light in the picture. The direction of the light source and the angle of the reflective surface both affect the final result.

2. Set the shutter speed: When using the polarizer, pay attention to the setting of the shutter speed, the polarizer can make the color more saturated, but it will also reduce the amount of light entering the lens. In order to affect the clarity of the image at a slow shutter speed, it is best to ensure a safe shutter speed, or use a tripod for shooting.

3. Rotate the polarizer: After adjusting the ** parameters, you can start shooting. Choose a good composition, look at the viewfinder, and turn the polarizer, you will find that the color of the sky changes greatly, and you can also change the angle and experience the effect of different light on the work of the polarizer.

1. When the polarizer is used in the sun, the direction of the polarizer should be 90° to the sunlight, if it is 0° or 180°, the polarizer will not work.

2. When using a polarizer, do not make the light shine directly on the mirror surface, otherwise halo will occur, and a lens hood should be added.

3. When using the polarizer, you must constantly rotate the mirror surface to get the best effect, so it is best to use a single-lens reflex camera, when using other cameras, you must first put the polarizer in front of the viewfinder eyepiece, find the appropriate position by visual inspection, and install it in front of the lens without moving the original position, and determine whether it is a banner or vertical format before shooting, and do not reverse it when shooting, otherwise the polarizer will fail.

1. It is mainly to eliminate the reflection of reflectors, but not to eliminate the reflection of metal surfaces. Secondly, you can reduce the light by about 1-2 stops of aperture, which is a temporary light-reducing lens, and through CPL, you can make the color of the blue sky slightly bluer, but you need to rotate the angle to produce the effect.

2. Precautions for using polarizers: polarizers can be added in front of both the lens and the flash. Pay attention to adjusting the direction of polarization, for example, the same direction is equal to not adding; 90 degrees is basically equal to no flash, find the right angle.