[ Huaqiang Security Network News ] The monitoring field is the fastest growing in the development of the security industry, and the use of lenses is indispensable. But now because of the development of technology, there are two different lenses. What is the difference between megapixels and ordinary lenses? Here are the authors to introduce to you. 
1. Different resolution The resolution of the lens at the center of the imaging surface is the highest, and the picture at the edge is relatively poor. Ordinary lens can reduce the sharpness of the edge while the central resolution can basically meet the definition. The overall resolution can meet the requirements of 440,000 pixels of ordinary cameras.
In fact, there are three key factors that determine the clarity of the lens: 1. Lens material and purity. The less impurities of the lens, the less interference light it produces, the higher the picture clarity; 2. The precision of the lens. The grinding precision of the lens is determined by the grinding equipment. At present, the difference between the domestic lens and the foreign lens is reflected in this point; 3. The coating precision of the lens. Precise control of the coating process is also one of the determinants of lens clarity.
In addition, the megapixel lens uses aspherical lenses to reduce aberrations and achieve a miniaturized design while improving clarity relative to ordinary lenses. The image quality is achieved from the center of the image to the peripheral part through special optical design techniques. The high resolution and high-contrast images increase the resolution by more than 2.5 times than the conventional lens, ensuring high image quality even when the image is cut or enlarged.
2. Spectral transmission ability The spectral transmission capability of different lenses also contributes to the improvement of picture clarity. The transmission of wide frequency light will greatly increase the amount of light received by the camera's target surface. It enhances the contrast and brightness of the picture and enriches the details of the picture.
3. Differences in spectral correction ability Only the transmission ability of broad spectrum is far from enough for high-definition imaging. If the spectral correction ability of the lens is insufficient, it will cause some wavelengths of light to be accurately imaged on the target surface of the camera, resulting in the generation of virtual image. . This technique is not possible with ordinary lenses through coating.
In fact, there are three key factors that determine the clarity of the lens: 1. Lens material and purity. The less impurities of the lens, the less interference light it produces, the higher the picture clarity; 2. The precision of the lens. The grinding precision of the lens is determined by the grinding equipment. At present, the difference between the domestic lens and the foreign lens is reflected in this point; 3. The coating precision of the lens. Precise control of the coating process is also one of the determinants of lens clarity.
In addition, the megapixel lens uses aspherical lenses to reduce aberrations and achieve a miniaturized design while improving clarity relative to ordinary lenses. The image quality is achieved from the center of the image to the peripheral part through special optical design techniques. The high resolution and high-contrast images increase the resolution by more than 2.5 times than the conventional lens, ensuring high image quality even when the image is cut or enlarged.
2. Spectral transmission ability The spectral transmission capability of different lenses also contributes to the improvement of picture clarity. The transmission of wide frequency light will greatly increase the amount of light received by the camera's target surface. It enhances the contrast and brightness of the picture and enriches the details of the picture.
3. Differences in spectral correction ability Only the transmission ability of broad spectrum is far from enough for high-definition imaging. If the spectral correction ability of the lens is insufficient, it will cause some wavelengths of light to be accurately imaged on the target surface of the camera, resulting in the generation of virtual image. . This technique is not possible with ordinary lenses through coating.
Post popular with T Post and Y Post.
T post/Y post can be installed with the panels without clamps and bolts, with easier installation and wider application.
T post : America standard with plate; Europe standard without plate
Specification: 0.95lb/ft, 1.25lb/ft, 1.33lb/ft
length: 5'-8'
Surface treatment: hot dipped galanized or paint green normal
Y post: Australian standard, Middle east standard
Surface treatment: hot dip galvanized, paint dark green
Specification: 2.04kg/m, 1.9kg/m
Post
Fence Post,Studded T Post,Galvanized T Post,Galvanized Y Post
Anping Deming Metal Net Co.,Ltd , https://www.wovenfence.nl