[Method for polarizing mirror] How is the main purpose of polarizing mirror in polarizing mirror?

How to use Polarized mirror

There are two types of polarizing mirrors: round polarizer (Referred to CPL ) Line polarial mirror (simply referred to PL or LPL To.

They are in most consumer digital cameras (DC ) There will be no difference in upper. TTL Light metering function) SLR/DSLR Also DC And hope to share a polarizing mirror, it is best to choose a round mirror.In addition, the differences between line polarizers and round polarized mirrors, as well as why in modern times SLR/DSLR The reason to use a round Polarized mirror, in the clumsy book L.6 Zhang has a very careful explanation; but because it is not important for novices, it is omitted here. Interested friends, please refer to the clumsy book (there is a chapter in the link above PDF files).

There is a loop that can rotate freely on the Polarized mirror. Its function is to regulate the effect of polarizing mirror.The polarizer is usually two types: thick (general) type and thin type. The former may be thicker than the latter1mm Or more, when mentioning polarizers below, if there is no special explanation, it refers to thick (or general) polarizer.The thin Polarized mirror is for wide -angle or ultra -wide -angle lens, because too thick polarizing mirrors can easily produce dark corners.Generally speaking, if the camera lens ( 135 Movies) The equivalent focal length is at 35mm Above (including 35mm ), Thick polarizer should not have a dark corner; but if the focal length is less than 35mm The thick Polarized mirror is likely to produce dark angles, but this is usually related to the optical and mechanical structure of the camera mirror. It may not be the case for every lens, so it is best to try it before buying a polarizer.

The main purpose of polarizing mirror:

Reduce the reflection of glass, water surface, and non -metal surface, make the sky blue, and improve the saturation of the color of the picture.Because the Polarized mirror is dark gray, it will block part of the part that can reach the sensor chip Light, it will generally decrease1 arrive 1.5 Between Levels.In addition to the full manual exposure mode, the camera's optical metering system of the camera will be adjusted by itself in other (such as aperture prerequisites, or the shutter prerequisite) mode, but you still have to check whether the aperture or shutter speed selected by the camera will be used.

Reduce reflection

The reflection on the surface of the subject will wash away the details of the picture, or change the color of the picture. One of the most important functions of the polarizing mirror is to reduce or even eliminate the light that is reflected by the camera and enter the lens, but when the subject is metal, Polarizer The function is not very significant.The best angle of lowering or eliminating the reflection with a polarizer is that when the light source's irradiation angle and the camera shooting angle are made with the camera30 On the occasion, one (or two) deviates from 30 The time -effective use will be reduced, and the more effective the angle deviation is, the lower it will be.It is very simple to reduce the reflection with polarizers.After the composition is completed, rotate the ring in front of the Polarized mirror, and watch the scene window (or LCD/EVF ) The effect of polarizing mirror will be displayed. Once the desired effect is obtained, stop rotating and shooting.It should be noted that polarizing mirrors are not universal, and it is likely to be unable to completely eliminate reflection.

The most well -known application of polarizing mirrors is to deepen the blue of the sky, making the blue sky and white clouds stronger; however, if the sky is not blue (such as a cloudy day), no matter how good the polarizer is, the blue sky cannot be shot.But we should It is time to understand that only one of the sky will become bluer, and the other may not change. More importantly, the shooting angle must be selected correctly.There is a very simple rule for choosing shooting angle, first extending the index finger To the sun, then erected the big fingers vertically with the index finger, and turning around the index finger, so the direction that the Mark finger passes is to get the most effective shooting direction; in other words, the best shooting direction and the direction from the camera to the sun to the sun Droop straight!Please pay attention, the Mi fingers passed by360 Degree, except for the middle of the right, this time, this 360 Some parts in the sky, part of the ground to the ground, to the sky is the direction that can turn the blue and become blue.When the camera deviates from this direction (such as the shift in the sun or the anti -sun direction), the lower the effect. If it is more than a certain angle, the effect will not be significantly or even disappear.After looking for the direction of shooting, slowly turn the ring in front of the polarizer, and take the shutter after getting the expected effect.

In addition, because polarizing mirrors will reduce or even eliminate the reflection of the subject, the color of the picture shot with polarizer is also more pure than it is not in time, and the contrast is also higher. This is the theme of the next section.

increase the saturation of contrast and color

The reflection of the subject will cover up the original color and details. If the reflex characteristics of the subject in the screen are similar (such as the leaves), a faint reflection not only erase the original color, but also reduce the contrast of the picture. In this Affection In the case, the use of polarizers has the effect of reducing reflection, reproducing the color of the subject, and improving the comparison of the picture.The lower left photo is added with a polarizer but the lowest effect is used, and the lower right is the maximum effect; these two are extremely strong In contrast, the reflection of the leaves under the scorching sun distused the color of the woods, but to maximize the effect of polarizing mirror, and the color of the wood and the grass appeared, making the two photos very different.

If the camera cannot be equipped with polarizing mirror?

Many small and stylish digital cameras can neither install filters nor adding sleeves, but we can hold a polarizer in front of the camera to shoot, but how to adjust the effect of polarizing mirror?The method is very simple. First of all The direction of the mirror on the shooting of the lens (so the closer to the camera, the better), see the lower left photo; then turn the ring on the Polarized mirror, stop after the expected effect (below); finally move the adjusted polarizer to the lens to the lens Ahead (below Right), but the polarization mirror cannot be rotated, because once the direction of the polarization mirror is changed, the desired result is not available.

Practice this procedure several times, and try to take some photos to compare the results of use without polarizing mirrors. After several times, they will be handy.Most lightweight digital cameras have a small diameter, small,37mm The Polarized mirror is usually large enough (if it is suspected 37mm Too small, just use it 43mm ; 37mm Too big, try to try it 28mm ), Bring a polarizer with you, you can easily take photos with saturated color, blue sky and white clouds, and high contrast during travel.

precautions for using polarizers

First, polarizing mirror may be the most important filter in digital photography. It can reduce or even eliminate the light reflected by the subject, turn the sky blue, improve the saturation of the comparison of the picture and color.

Second, most consumer digital cameras can use line polarizers, but the vast majority (especially those with autofocus and metering function)SLR/DSLR You can usually only use a round Polarized mirror.If a Polarized mirror is used at the wide angle end, a thin Polarized mirror should be used.

Third, the use of polarizers will lose1 arrive 1.5 Grade light will affect the aperture or shutter speed of the selected; in other words, it is likely to use a large aperture (so the depth of the depth of the scene) or the slower shutter speed (then the movement of the movement It may be blurred and easily shake the camera), so you should pay attention to the aperture and the shutter speed.

Fourth, although the polarizing mirror has the effect of reducing reflection and turning the sky blue, but this effect is related to the angle of shooting. If the shooting angle is wrong, it is likely that the expected effect will not be obtained.Furthermore, when shooting with a wide -angle or ultra -wide -angle lens, because the viewing angle may be greater than the best angle of the polarizer, the sky in the screen may appear from very deep to quite light, that is, the blue color with uneven concentration.

Fifth, it is best to remove it from the lens when there is no need to use a Polarized mirror.1 arrive 1.5 In the secondary light, the second is because the effect of the polarization mirror is set to and the effect is more or less, so the polarizer may sometimes cause the anti -effect (such as filtering the expected reflection).

This article introduces the basic concepts, usage, and effects of polarizing mirrors, and lists some precautions when using polarizers.The effect of polarizing mirrors is difficult to simulate post -made software, even if the sky turns blue.if The boundary between the sky and the ground is relatively simple. When the post -made system is selected, it is easier to change the color depth. Once the boundary becomes very complicated, the part of the sky is a time -consuming and laborious job. Objects, it is better to use Polarized mirror to adjust the effect when shooting.Furthermore, if the picture loses the details due to reflection, no matter how good the post -made skills are, there is no way to make the details and color that has not been recorded. Come.For these reasons, polarizing mirrors are a filter that cannot be completely replaced by post -made software.

What kind of material is polarized lens?

The material of the polarizer is two types: resin polarizing mirror and glass polarizer.

1. Advantages of resin polarizing mirror

(1) Light weight.

(2) It is not easy to rupture: In case the lens is crushed, not only has few fragments, but also not sharp, which can minimize the situation of eyeball and facial injuries.

(3) You can dye: Resin lens is easy to dye, and it can be matched with clothing and popularity.

(4) It can cover ultraviolet rays: almost completely covering ultraviolet rays with a wavelength of less than 350mm, and the effect is far better than glass lenses.

(5) Strong anti -fog: Because the thermal conductivity of the resin lenses is lower than that of glass, it is not easy to cause blurred unknown due to steam and hot water and gas, and even if it is blurred, it will quickly retreat.

(6) Anti -dental remarks: Generally, high -heat and small volumes are prone to dental and spots in glass sheets, but if you encounter resin lenses, it will automatically bounce, and will not cause any traces on the surface of the lens.

(7) The surface reflection of the resin lens is lower than that of ordinary glass sheets, and it is not dazzling.

(8) There is no color difference between resin dual -light lenses. This is due to the entire structure of the resin dual -light lens.

(9) The range of resin lens anti -chemicals and solvents is extremely wide. Almost all household solvents and chemicals will not affect or damage it.

2. The disadvantages of resin polarizing mirror

(1) It is easy to abrasrate: The scratch resistance of the resin lens is worse than that of glass lenses, but it can be improved by surface hardening, but the effect is limited.

(2) It is prone to deformation when installing the frame: This is because the density of plastic lenses is lower than that of glass lenses.

(3) Infinitive high temperature: Although the resin is a thermal solid material, once a multi -layer membrane is plated, the surface of the multi -layer membrane may cause cracking due to high temperature.

3. Advantages of glass polarizing mirror

(1) Large hardness: The surface is not easy to be scratched, and it is more abrasion than resin.

(2) Large density: The loading is not deformed, which affects its polarizing effect because it is improper.The density of the resin tablets is smaller, and it is much stronger than the glass sheet. If it is not installed, or the shape of the glasses itself is not very consistent, it will deform, affecting the polarizing effect.

(3) Strong light transmittability: The light transmission of glass sheet is generally stronger than the lipid tablets and stronger clarity.

4. Disadvantages of glass polarizing mirror

(1) Heavy weight: Because its density is more than resin tablets, general glass glasses are heavier than resin glasses.

(2) Fragmentation: As we all know, the glass is fragile.Therefore, its ability to just fight is poor.

(3) Variest prices: The polishing technical requirements for polarizing glass chips are high and the production process is more troublesome, so general glass polarizers are used for mid -to -high -end glasses.

Principles of polarizing mirror

Polarized lens is only allowed to pass through the light of a specific polarized direction in natural light.We all know that light is transmitted in line, which is the particle nature of light; at the same time, light is also spread in the form of waves. This is the volatility of light, so light is also called light wave.Light waves have vibrations in all directions, and polarizing mirrors use the volatility of light.

The core of the polarizing mirror is polarizer, and the polarizing film has a two -way transparent thin film. It allows the light vibration of parallel and light transmittance shafts, and light vertical in this direction is absorbed. This phenomenon is called polarizer of light vibration.change.The light passed through the same vibration direction is called polarized light.The reflection light is absorbed vertically with the light transmittance shaft of the polarized film because the light is reflected.The polarizing mirror uses this principle, which effectively eliminates strong reflected light and scattered light, making the light softer, so that the scenery that people see is naturally clear.The polarizer can also effectively absorb 99%of UVA and UVB to protect the eyes well.It is the first choice for driving, hook fish, skiing, tourism, etc.

But polarizing mirror is not a perspective mirror. When buying polarizers, there will be a test film with some pictures, as long as the Polarized mirror can be seen.In fact, this test film is specially made. It is to use the polarizers to make the polarizer see the parallel light shot from the picture inside, so that you can see the picture hidden inside, not perspective.The method.Now some manufacturers have produced mahjong cards with polarizers, and parallel light images are embedded behind the card. As long as they wear polarizers, they can know what cards are from the back of the card!

How to identify the good or bad of polarized lenses

1. Under normal circumstances, polarizing Sunglasses are affixed with obvious electrostatic electrostatic standards on the lens, or the polarizer lens is marked on the product tag.

2. When buying polarized Sunglasses, you can test it with polarizing test films.Some of the patterns on the test film cannot be recognized with the naked eye, and the polarized lens can be clearly identified.

3. According to the display principle of the LCD screen, observe the liquid crystal screen such as phones through polarized lenses, when the screen is rotated, the screen will also turn into a black screen with rotation.Essence

The advantages and disadvantages of the lens are the decisive factor to measure the quality of a pair of glasses, so consumers must be careful when buying the lens.glass lens is wear -resistant, but relatively speaking, its weight is heavier than other materials, and it is also easy to break.Popular resin lens: This kind of lens is lighter than glass lenses, impact resistance, and is not easy to break, but the hardness is low, so it is easy to get hair and it is easier to have scratches.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

1. What are the differences between night vision glasses and Polarized glasses

1. Different principles

The polarizing mirror is made according to the polarization principle of the light, and the unnecessary light is scattered, such as strong sunlight.

Night vision mirrors are based on the auxiliary observation tools made by the night vision technology at the same time. The night vision technology includes two aspects: micro -light night vision and infrared night vision.

2. Different effects

The special effect of polarizing mirror is to effectively exclude and filter the scattered light in the beam, so that the light can put the eye visual image into the eye transmittance shaft, making the field of view clear and natural.

Micro -light night vision mirrors make the weak light large, so that it shows a clear picture in the sight, so when there is no light at all, the microcomioxid night vision mirror cannot be seen; the active infrared night vision mirror is inIn any case, you can see things. If there is no infrared source, passive infrared night vision mirrors cannot see things.

3. Different use of usage

Polaries can be used when driving, fishing, skiing, rain, etc. are used in strong reflection or strong light.

Night vision mirrors are usually used at night, and they are widely used in the fields of transportation, military and other fields.

2. How to choose night vision glasses

1. Material of the lens

The material of the lens affects the effect of protecting the eyes. You should choose the driving mirror made of polarized lenses. This can effectively reduce the dazzling Lights and the light of the Lights.The strong light becomes soft, and the vision is clearer, which also guarantees the safety of the driver's friends and relieves the fatigue of the eyes.If possible, let the salesperson darkens the light when buying, and feel the softness and clarity of the Lights after wearing the product.

2. The radian of glasses

The comfort of polarizing driver mirrors depends on the arc of glasses.Westerners' nose bridges are generally tall, and the contours of the bridge of our Orientals are round. Therefore, when choosing, you can try it. After wearing it, you can feel that it is easy to drop and hold the nose. It is most important to choose the glasses suitable for us.

3. The nose of glasses

When the driver friends buy the night vision mirror, they should choose the kind of soft and elastic nose. In this way, it will not make the nose of our major drivers feel uncomfortable.

4. Observe the mirror leg

The flexibility of the driver's mirror legs is also very important. Check out whether the mirror legs are flexible and whether the size can be adjusted to meet the needs of different drivers and friends. Flexible mirror legs will be easier to adjust and make drivers feel more comfortable.

5. Framework material

You should choose a driving mirror of the alloy material. The glasses made of this material are very light, the weight is not heavy, and it is strong. The ears will not be uncomfortable because of wearing glasses for a long time.

6. The thickness of the lens

The thickness of the driver's lens lens affects the use of glasses to a certain extent. Choosing glasses with thicker lenses can be more durable to prevent the glasses from being stimulated and unexpectedly crushed, effectively protecting the eyes of drivers and friends.

What is polarized clamp

Everyone may encounter the sunlight when driving, and the eyes are too strong. As we all know, it is well known that if the driver's sight is poor, it is very likely to cause a traffic accident.At this time, you need a good Sunglasses. However, many myopia friends say that wearing Sunglasses is a very difficult thing for yourself. Ordinary Sunglasses are very difficult to load your eyes. myopia Sunglasses vision of the vision of myopia Sunglasses.The correction effect is not satisfactory, so what does this do?I recommend a very convenient product here -Sunglasses.

What is Sunglasses clip

Everyone knows the Sunglasses, but what is the Sunglasses clamp? In fact, it is very simple. The Sunglasses clamping the mirror legs on the basis of Sunglasses, and a clip is added between the two lenses.In this case, myopia friends can use Sunglasses very conveniently, so they don't have to worry about wearing two glasses.

Types of Sunglasses polarizers

The first is color lenses. The most common is pink lenses. It is average in sunlight and ultraviolet filtration. The main advantage is that the price is cheap.Then there are tea colors and gray types. This kind of optical fiber filtration ability is strong, but the price is also more expensive.

Secondly, there are coating lenses. This kind of lens uses coating on the mirror to reflect light to protect the eyes. In addition, this Sunglasses will reflect the rainbow -colored light when wearing, and it looks cool.

There is also a relatively special Sunglasses, yellow Sunglasses, which is generally common in shooting competitions. If you want to observe more clearly, users can consider this yellow Sunglasses.

Six major lenses classification

1. Anti -light protection lens

This lens is coated with a thin layer of magnesium fluoride on the surface to prevent strong light reflection, making you see things clearer and not disturbed by strong light.To detect whether your Sunglasses really use anti -light protective lenses, you can align the light sources. If you see purple or green reflex, it means that the lens does have anti -reflected protective membranes.

2. color lens

Also known asThe "staining lens" is to add some chemicals during the lens production process to make the lens appear color to absorb the light of a specific wavelength.This is the most commonly used lens type used in Sunglasses.

3. color -painted lens

The effect of this lens presented is the same as that of color lenses. It is only made of different ways. It is to apply color to the surface of the lens. The most well -known is"Gradual -like coloring lenses", the color is the deepest, and then it is lighter.Generally, Sunglasses with a degree of degree are mostly treated with color -coating.

4. Polarized lens

In order to filter the dazzling light in the water surface, land or snow, add vertical special coatings to the lens, which is called polarized lens.It is most suitable for outdoor sports (such as: maritime activities, skiing or fishing).

5. Trimming lenses

Some people call it"Optical lens".Because the chemicals of silver are added to the lens, so that the original transparent and colorless lenses will become colored lenses when encountering strong light, so it is suitable for indoor and Outdoor simultaneous use.

6. Meicoscopy

Poor Sunglasses designed for myopia people are effectively anti -glare and ultraviolet rays.It is especially suitable for outdoor sports such as driving, Outdoor, fishing, etc.Adopting polarized lens technology, the visual resolution is greatly improved.eliminate99%The reflection light and scattered light make your vision clearer and soft.The lens is specially added to enhanced treatment, which is effective, scratch resistance, and impact.

precautions for Polarization of Polaries

Because most of the purchasing Sunglasses clamps are myopia users, it is recommended that you choose yellow Sunglasses as much as possible when buying. This Sunglasses have a small degree of distortion of things. Otherwise, after the distortion of two pairs of glassesThe distance and shape.

1As well asUV prevention function

When we buy an external Sunglasses, we must first confirm whether the purchased product has the function of anti -ultraviolet rays. If there is no ultraviolet function, it is not possible to block the damage to the eyes by ultraviolet rays.Before buying, general merchants will have a banknote test machine or a professional instrument to prevent ultraviolet rays. Testing with instruments is simple and fast.Use the banknote check machine to identify, you can100Yuan's banknotes are placed in the banknote inspection machine, and then the lens is used to block ultraviolet rays to see if there are still anti -counterfeit marks. If the anti -counterfeit mark appears, it is not anti -ultraviolet.

2As well asWhether the external clamp has a polarized effect

The polarizing effect helps us better distinguish the objects under strong light and reflect light, and can improve our visual effects regardless of driving, skiing, or fishing.General external Sunglasses will have this function, but in order to buy a rest assured product, we can use the mall's polarizing test card for testing. GenerallyEffect lens.If there is no polarizing test card, you can also cross the two polarized lenses to overlap and overlap. You cannot see the polarizer of the lens outside the object, and the non -polarized product can be seen.

3As well asOverall structure of external clamps

Many of the tight device on the polarized clamping sheet are iron, which is easy to scratch the lens.When we choose the product, pay attention to the smoothness of the product to avoid scratching our glasses.The force point of contact with the lens requires special attention. Pay attention to whether the contact point of the product is fitted with the lens and whether there is rubber/ /Silicone is separated.Do not choose an external clamping piece of metal products, which can easily cause the lens to scratch and affect vision.

In fact, most Sunglasses manufacturers have made Sunglasses. When choosing, everyone pays attention to choosing the famous Sunglasses brand, such as Tyrannosaurus, Ray Peng, Versace, Buick, Bao Sheng, etc., are all good choices.For more well -known brands of polarizers, please refer totop Ten brand brand Rankings of PolariesEssence

Xiaobian concluded: Although Sunglasses can effectively protect the eyes and play a purpose of playing handsome, it is not suitable for wearing Sunglasses at all times, such as the interesting report, banquet, and wearing Sunglasses at night.Excience, so wearing Sunglasses must also pay attention to time, occasion, working environment, etc.Okay, the introduction of Sunglasses clamps is here. Let's buy Sunglasses folder that suits them.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

1. What is the material of protecting the polarized lens

The Bao Sheng polarizer uses a high -comparison GTR polarizer lens, and uses high -quality optical materials produced by Swiss EMS. The quality is light and not easy to deform. It can greatly reduce the bearing bearing bearing and make it more comfortable to wear.

1. It is made from seven layers of special materials, each with its own functions.

2. The polarization angle and arc of the lens are designed according to the principles of precision optical.The wearing users will never have the distortion and dizziness of the imitation products!

3. Each lens is strengthened by the original factory, scratch resistance and difficulty in deformation, and broken.It can be used for a long time and the performance is unchanged.

4. Automatically adjust the deeper color of the lens according to the ultraviolet intensity, as well as a variety of high -quality polarizers such as the optimum film that can make the visual bright.

2. What are the effects of Bao Sheng polarized lenses

PROSUN polarizer has a special polarizing effect, which can reduce direct, refracted or reflected light, and can resist super ultraviolet rays. For the front scene and the ground high and low, it feels obvious, clear and soft, and the video resolution has greatly improved.And designed for the face shape of the Chinese people, in line with ergonomics, it feels comfortable to wear, and its appearance is more beautiful.The surface of the lens is specially treated, which is not easy to scratch. It is not easy to generate static, oil -proof, and not easy to stick dust when wiping.Bao Sheng Polarized mirror product Daquan & gt; & gt;