What is the focal length of Sony's integrated movement camera?
Source：Shenzhen Kai Mo Rui Electronic Technology Co. LTD2020-06-05
When we use Sony's integrated movement camera or other cameras, we often consider the issue of focal length. This is also what many people have to think about when using SLR cameras. So what is the focal length of the camera? Today, CAMERA Technology will discuss this issue with you.
The explanation on the encyclopedia is condensed into one sentence: focal length, also known as focal length, is a measure of the concentration or divergence of light in an optical system, and refers to the distance from the center of the lens to the focal point of the light.
How to choose the focal length in the camera? There are actually more parts we have to consider.
Under normal circumstances, in the monitoring environment of ordinary meeting rooms, offices, and elevators, a short-range fixed-focus lens of about 3mm to 12mm can meet the demand. If it is for security monitoring in the community, or ordinary road monitoring, surveillance lenses from 6mm to 15mm can basically meet the demand.
For general intersection monitoring, due to the large shooting space and high definition requirements, it is suitable for medium-distance focal length lenses from 6mm to 60mm. In the large-scale camera lens used for urban security monitoring, due to the difference in monitoring distance and environment, a long-distance zoom lens of about 10mm to 120mm is basically enough.
If it is applied to areas that require large-area monitoring such as highways, national highways, rivers, airports, forests, etc., in the above-mentioned environments, the monitoring range is far the main feature of these environments, so generally 10mm to 1100mm lenses are selected. Meet shooting needs.
In addition, in the imaging characteristics of the lens, the larger the focal length, the farther the monitor can be, but the smaller the observation angle. The smaller the focal length, the closer the monitoring distance is, the larger the field of view; therefore, this is a contradictory relationship. Only one angle can be used.
Therefore, when selecting the focal length, it is often measured according to the angle of view. And too large or too small initial focal length may have a certain adverse effect on the monitoring effect.
The explanation on the encyclopedia is condensed into one sentence: focal length, also known as focal length, is a measure of the concentration or divergence of light in an optical system, and refers to the distance from the center of the lens to the focal point of the light.
How to choose the focal length in the camera? There are actually more parts we have to consider.
Under normal circumstances, in the monitoring environment of ordinary meeting rooms, offices, and elevators, a short-range fixed-focus lens of about 3mm to 12mm can meet the demand. If it is for security monitoring in the community, or ordinary road monitoring, surveillance lenses from 6mm to 15mm can basically meet the demand.
For general intersection monitoring, due to the large shooting space and high definition requirements, it is suitable for medium-distance focal length lenses from 6mm to 60mm. In the large-scale camera lens used for urban security monitoring, due to the difference in monitoring distance and environment, a long-distance zoom lens of about 10mm to 120mm is basically enough.
If it is applied to areas that require large-area monitoring such as highways, national highways, rivers, airports, forests, etc., in the above-mentioned environments, the monitoring range is far the main feature of these environments, so generally 10mm to 1100mm lenses are selected. Meet shooting needs.
In addition, in the imaging characteristics of the lens, the larger the focal length, the farther the monitor can be, but the smaller the observation angle. The smaller the focal length, the closer the monitoring distance is, the larger the field of view; therefore, this is a contradictory relationship. Only one angle can be used.
Therefore, when selecting the focal length, it is often measured according to the angle of view. And too large or too small initial focal length may have a certain adverse effect on the monitoring effect.
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