What is polarizing mirror

The word "polarizing light" comes from physics. The reflection on the non -metal surface of glass and water surface is polarized light, and the clear blue sky is also polarized in the scattered light in the direction of 90 with the sun.These Lights need to be avoided, eliminating polarizing light, which can make the color of the sky deeper and effectively reduce the impact of glare on photos.The polarizing mirror uses the grating principle to eliminate polarized light at a certain angle.Here you need to pay attention to the angle of shooting. When the backlight or Smooth light shooting, the role of polarizing mirror is limited, and it must be a certain angle with the light source and reflector.

What is the role of polarizing mirror

The photos can look more transparent and the color is brighter.It can also be darkened in the sky, eliminate reflection, and it is very useful when shooting water flow and glass.Polarized mirror can also play a role in blocking light, which can reduce the shutter speed.To understand the use of polarizers, you need to master certain theoretical knowledge.

When shooting the scenery, the polarizing mirror is very useful, especially when the sky is dark, it can make the color of the blue sky more saturated, while highlighting the clouds in the sky.However, the material must be reversed. Do not use polarizing mirrors too much, such as the reflection of the leaves and grass is also polarizing light. These reflectives are conducive to expressing details and layers. If these Lights are eliminated, the screen will be overwhelmed and there is no level.

The greater use of polarizing mirrors is to eliminate reflection, such as the reflection of the water surface and glass window.In this way, you can shoot more details, such as things in the window, or rocks and water plants in the water.And polarizing mirrors can reduce the amount of light in the lens, slow down the shutter speed, and play the effect of similar to the medium -density mirror.

Polaries are divided into two types: linear polarizing mirror (LPL) and circular polarizing mirror (CPL). The former is mainly used for old -fashioned manual cameras because it interferes with automatic exposure and camera light metering system.Most of the polarizing mirrors on the market are CPL. When buying, choose a ultra -thin Polarized mirror when using a wide -angle lens to shoot according to your own lens caliber, so as not to occur to avoid dark corners.

When shooting the scenery, learning and using a circular polarizing mirror will have an immediate effect, making your photos refreshing.

How to use Polarized mirror

1. The brightness of the dark sky

By rotating the lens, the many partial vibrations in the roof reflection can weaken the intensity of light in the sky, darke the sky, and increase the contrast between the blue sky and the white clouds, making the sky blue and the clouds whiter.It should be noted that the CPL mirror does not affect the color of the light.

2. Eliminate the reflection on the surface of water, glass and metal

When the light is projected to the plane objects, such as water, glass, paint furniture, etc., it usually produces a strong SLR reflex light, which will become a high light point in the photography screen.This highlight point will affect the shooting effect. At this time, if you use the CPL mirror for shooting, you can improve the picture quality of the photo and improve the clarity of the picture.With the CPL, the previous reflective water surface does not affect your shooting. You can take more clearly to the fish in the water; add CPL, the previous reflective glass window will not affect your shooting. You can shoot more clearly.The exhibits furnished in the glass window; add CPL, the previous reflective window will not affect your shooting. You can shoot the charming scenery outside the car window from the car.

3. Replacement neutral gray filter

CPL mirrors can reduce exposure 1-2 gears, which can replace the role of medium gray mirror.Under certain needs, 1 or 2nd exposure can be reduced.

Many photography enthusiasts know that using polarizers can make the blue sky blue and eliminate reflection on the surface of glass, water and metal, but in fact, the polarizing mirror has more effects.When shooting in cloudy weather, polarizers also have obvious effects.Although it does not turn the gray sky at this time, it can make the color stronger by removing the reflection on the surface.For example, shooting the leaves of plants, the surface of the glass and the slippery stones of the plant in cloudy weather will reflect some light from the gray sky.These reflection obviously fade the color.Add a Polarized mirror in front of the camera. Slowly turning the front lens, you will find that the leaves of the plant have thickened the leaf surface.installation and non -mirroring are shot the same scene, you will find a very obvious difference in the photos you shoot.In cloudy weather, the effect of increased color saturation through polarizing mirrors is as obvious as eliminating reflection.

When using a polarizer, just set it in front of your lens, watch the front lens of the Polarized mirror at the same time through the viewfinder, until the result of satisfactory, then you can press the shutter to focus and adjust the layout of the screen.Press the shutter.

However, some photographers who use polarized mirrors for the first time said that they could not observe any changes when rotating polarizers. This is because the polarization mirror has the best effect when the light is in the direction of the light and the axis of the lens is 90 degrees.If you shoot against the sun, or face the light source (sunset), the Polarized mirror will not have any effect.But if the light comes from your left or right, or directly from the top of the head (the sunlight at noon, cloudy weather), the Polarized mirror will magically eliminate the reflex, the dark blue sky and improve the color saturation.

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Mooth classification of Sunglasses lenses

1. glass lens

The glass lenses are often exposed to it. The most prominent advantage of glass lenses is that its optical properties are very stable. This is the usual advantage of glass lenses. It is the same on frame glasses.Affected by the pressure of the framework.The disadvantage of glass lenses is that it is easy to break, and it is easy to cause damage to the eyes.At present, the newly developed enhanced glass lenses are more prominent than ordinary glass lenses, and they are also considered a safe lens.

2. Polarized lens

This is a lens used on polarized Sunglasses. The polarization principle of light is used. In the future, the glare obstruction of the parties will be separated from the lens to make the sight clearer and safer when driving.In 1937, Dr. Edwinland in the United States invented this lens and was widely used in polarizing Sunglasses, and he also created his own Pokmon company.

3, color change lens

Also known as sensitive lens, due to the change of light, the color of the lens changes accordingly, so that the eyes can adapt to different environments. Under the strong light, the color of the color changing lens will deepen.EssenceThis kind of lens has been used in myopia Sunglasses. This kind of Sunglasses in the form of color -changing lenses are also considered to be the most convenient and most beautiful myopia Sunglasses, which is more popular than clamping.

4. Plastic lenses

This is the material that many Sunglasses brands like very much. Light and not fragmented are its most obvious features. The functions of non -processed plastic lenses are significantly better than glass lenses.EssenceThe disadvantage of plastic lenses is that its wear resistance is easier to scratch. When the lens is impacted, it is also easy to deform, so it should be more careful about its maintenance.

There are three main types of plastic lenses, namely resin lenses, PC lenses, and acrylic lenses.

5. Resin material Sunglasses lens

Friends who often wear glasses must have heard of resin lenses, but what are the resin lenses?Resin (CR-39) is actually a chemical substance of the phenolic structure. It is refined from the phenolic components in oil. The characteristics are light weight, high temperature resistance, strong impact resistance, and can effectively block ultraviolet rays.The great advantage of resin lenses in Sunglasses is that it is easy to color. Many fashionable Sunglasses use resin lenses to favors the characteristics of coloring.But the resin lenses are poor and impact.This type of Sunglasses have a wide range of use and strong decorative effects. It is a good choice for fashion people.

6. PC material Sunglasses lens

PC refers to polycarbonate, a type of plastic (PC). It is a polymer polymer containing carbonate groups in the molecular chain and PC material. In short, it is a Sunglasses material material.There are high -end points, PC films commonly used by professional athletes and colorless or colorless plastic sheets.It is characterized by lightness and good coloring performance. The disadvantage is that the abrasion resistance is low and the optical properties are unstable.PC -made Sunglasses are more suitable for sports people and drivers.

7. AC film (acrylic lens)

It has excellent and tough characteristics, has a high perspective rate, has good anti -mist resistance, the lowest cost, the material is crispy, the rupture may have crumbs, and the stability of optical indicators is average.

8. nylon material Sunglasses lens

nylon Sunglasses are used in sports brands Sunglasses and high -quality big -name Sunglasses. It has high elasticity and excellent optical quality, and has a strong resistance to impact.Professional protection function.However, nylon lenses have poor wear resistance and high production costs.Such Sunglasses are more suitable for people for sports or professional protective mirrors.

9. Tac material Sunglasses lens

TAC Sunglasses are relatively widely practical in China. TAC (triax cellulose, TriaceTyl Cellulose), which is complicated, is one of the high molecular materials with high penetration.TAC has the characteristics of Sunglasses, which has the characteristics of acid -resistant type, light texture, and high cost performance.However, the abrasion resistance has become a soft foot of TAC lenses, and it has its less stable optical characteristics. Although the price of TAC lenses is low in price, it is eventually discarded by most well -known foreign brands.

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