What's the hole next to Apple 1 1 camera?

What's the hole next to Apple 1 1 camera?

For some careful users, you will notice a black dot next to the camera on the back of the iPhone. Many users don't know what the role of black spots is. In fact, black spots play a great role. Let's learn more about the role of black spots!

What's the hole next to Apple 1 1 camera? The hole next to Apple 1 1 camera is a microphone, which can not only act as a microphone, but also help the mobile phone to record and reduce noise. IPhone 1 1 has two rear cameras. They are120,000 pixel wide angle and120,000 pixel super wide angle, 2 times optical zoom (zoom-out) and up to 5 times digital zoom; It has a higher brightness primary color flash, supports portrait mode and portrait light effect, and a new generation of intelligent HDR photos.

IPhone 1 1 has an original camera with12 megapixels. The front and rear cameras of iPhone 1 1 can take pictures with 4K resolution at a frame rate of 60fps, and also support slow-motion video recording of 1080P. IPhone 1 1 still has great optimization in camera functions, such as the new night shooting mode, the unique deep fusion mode of Pro models (multiple photos are combined into a 24-megapixel picture), the brand-new HDR and portrait mode algorithms, and the brand-new camera UI design, which bring a better photo shooting experience as a whole.

What's the hole next to Apple 1 1 camera? 2 How to choose a computer camera?

Don't pursue CCD too much, the lens is the key.

Pixel is one of the important indicators to measure a camera. I believe that pixels are the most frequently heard topic when buying a camera. But for the camera, is the higher the pixel, the clearer the image? Actually, it is not. To understand pixels, we need to understand resolution. Resolution is the number of pixels displayed on the computer screen, and pixels are points distributed in a specific image size. The higher the pixel, the higher the resolution.

What is the focus of camera purchase?

For example, a 300,000-pixel camera supports a maximum resolution of 640*480, which means that an image with an area of 640*480 contains a maximum pixel value of 640 * 480 = 307,200 pixels. Usually, the camera only uses the resolution of 320*240 in application, and the resolution used in network transmission will be lower. As far as the current home camera technology is concerned, the maximum supported resolution is 640*480. More than 300,000 pixels have no practical significance to the camera, and pixels have no direct impact on the camera's definition.

In fact, what really affects the sharpness of the camera is the lens. The position of the lens in the camera is equivalent to the human eye. Whether the captured image is bright or clear often depends on the quality of the lens. Different cameras use different lenses, including lenses with four layers of optical glass, lenses with one layer of glass and one layer of plastic, and even the worst lens has only one layer of plastic. Some lenses are coated with an iris on the basis of four layers of glass to enhance the performance of the filter.

An important index to judge the quality of lenses is the high light transmittance. Generally, a good lens will have a larger transmittance aperture, and it can get a good effect even in the case of poor light: the smaller the transmittance f value, the greater the transmittance, the higher the transmittance, the more saturated the color and the better the imaging effect.

At present, the F value of four glass lenses of cameras on the market is generally above 2.0, and only a few cameras can reach 1.8. Only the lens that looks clear and crystal clear is a good lens, but the price is higher, so two cameras with the same pixel and the same function use different lenses, and the cost may be very different.

Imaging speed and frame number are the key points.

Because the camera is used to chat online, it is also important to have a fast imaging speed, which depends on the overall configuration of the camera, so not only the lens, but also the configuration of other parts of the camera also determines the quality of the camera. In addition to the lens, the main parts of the camera structure are sensors, data processors and peripheral circuits.

If inferior accessories are used in the overall configuration, even the best lens imaging effect will not be good, because it involves the quality of components and the reasonable design of peripheral circuits, but users often ignore this link, and usually blindly pursue the lowest price and ignore the overall performance.

/kloc-the number of picture frames transmitted within 0/second.

Another factor related to the imaging speed is the number of frames, that is, the number of frames transmitted in 1 second. It can also be understood that the graphics processor can refresh several times per second, usually expressed in fps. Different pictures need different capturing abilities. The maximum resolution of mainstream digital cameras to capture pictures is 640×480, but at this resolution, the pictures will jump and cannot capture at 30fps.

At present, the mainstream frame rate is still 30 frames per second.

When the resolution is 320×240, it is possible to achieve the standard capture rate through the combination of hardware and software, so the complete video capture speed is only a theoretical indicator. For the frame rate, you can use a book to shake up and down in front of the camera (not too fast) to see if the image delay is serious. If you can display images continuously, you can basically reach the level of 30FPS.

The focusing function is indispensable.

Some users found the image blurred after buying the camera, but it was no problem when the merchant tried it. Why? Generally, it is caused by not adjusting the focal length. Like a fool's camera, the camera uses hyperfocal distance, and the focal length should be adjusted manually when the depth of field is large but macro. Therefore, it is sometimes necessary to manually adjust the focal length of the camera to obtain the clearest image.

Manual focusing is still a necessary function of the camera at this stage.

However, the focal length of many cheap cameras is fixed, that is, cameras can only take clear images at a fixed distance, and once they are too close or too far away, they can't take clear images. A good quality camera lens can be adjusted manually, so that no matter where you put the camera, you can get a clear image by adjusting the focal length. Usually we can adjust it through the adjustment device outside the lens.

The focusing effect is often measured by the focusing range. The focus range refers to the range from the closest point to the farthest point where the camera can focus. For example, the focus range of some cameras is 20cm to infinity, which means that its nearest focus distance is 20cm, and it is impossible to focus in this range. Even if you can focus, the image is not clear.

Data transmission interface can not be ignored.

At present, USB has become the standard interface of cameras. This connection method is simple and easy to use, and supports hot plug. Devices use their own reserved interrupts alone and will not compete with other devices for PC resources. For 350,000-pixel cameras, the transmission rate of USB 1. 1 interface can fully meet the requirements. If you choose a pixel-level camera, you'd better choose USB2.0 interface. However, if such products are used online, the display effect on the network is basically the same as that of USB 1. 1 products due to the network speed.

Most cameras use USB2.0 interface, which is compatible with USB 1. 1.

In addition, the factors that users can consider when buying a camera include attached software, built-in microphone, angle adjustment, base fixing device, still shooting and so on. , can bring us a lot of convenience in use. Among them, the application attached to the camera is an important part, and many manufacturers will attach some applications such as video mail software and simple video editing software, so that users can choose according to their own situation. "In addition, some image effect correction and enhancement programs are also very practical. For example, adjusting the color saturation, contrast, edge enhancement and gamma value of the camera can sometimes greatly improve the shooting effect as long as it is properly adjusted.

What holes are there next to Apple 1 1 camera? 3 Take Apple's 1 1 and IOS 13 systems as examples. The hole next to Apple 1 1 camera is a microphone, which can not only act as a microphone, but also help the mobile phone to record, so that users can run smoothly whether shooting videos or using siri.

At the same time, this small hole also enhances the sensitivity of the microphone and receiver, making the voice clearer when users speak, so this small hole design is a highlight of Apple's mobile phone, which can better serve people. For example, when people answer the phone and the surrounding environment is noisy, there will definitely be a lot of noise when making a phone call. To solve this problem, Apple added two microphones to its 1 1 mobile phone. The first microphone is at the bottom of the phone, which can keep the call stable, and the hole next to the rear lens on the back of the phone is actually a microphone, but this microphone is used to reduce noise.

Moreover, the small hole next to the Apple 1 1 camera will process the collected external sounds and then emit some sound waves just opposite to these noises. This can effectively reduce the noise, and the noise reduction effect is quite remarkable.