Traditional Culture Encyclopedia - Photography and portraiture - What technology does the camera have?

What technology does the camera have?

What is the working principle of smart camera?

1. With the support of wide dynamic technology, the camera can be used anywhere. It can combine the images generated by high-speed shutter exposure in high light and low-speed shutter exposure in low light to generate a composite image, so dark details can be obtained, and the bright parts of the image will not be too saturated.

2. The basic principle of a camera is to convert optical image signals into electrical signals.

3. The working principle of network monitoring camera is to transmit the received information through lens, image sound sensor, A/D converter and image sound encoder. As the front-end component of network camera, lens has fixed aperture, automatic aperture, automatic zoom and automatic zoom, just like analog camera.

4. The working principle of the surveillance camera is that the light (scene) is projected onto the surface of the image sensor through the optical image generated by the lens, and then converted into an electrical signal.

5. The working principle of network monitoring camera is to transmit the received information through lens, image sound sensor, A/D converter and image sound encoder.

6. Generally speaking, mobile phone cameras mainly include built-in cameras and external cameras. The built-in camera refers to the camera installed inside the mobile phone, which is more convenient to use; An external camera refers to connecting a mobile phone and a digital camera through a data cable or other means to achieve shooting, which is more convenient to operate.

What is the technical principle of the camera invented by Edison in 1889?

As early as 1885, shortly after Goodwin invented celluloid film in the United States, Edison thought of making movies with this film. 1889, Edison invented the camera.

1920, Edison invented a mobile movie camera. This camera uses a pointed gear to drive the tape with a width of 19mm. Under the control of the ratchet, it drives the tape to move intermittently and punch holes at the same time.

1920, Edison in America invented a camera. This camera is driven by a pointed roller 19 mm wide non-porous adhesive tape. Under the control of the ratchet wheel, the adhesive tape is driven to move intermittently and punch holes at the same time.

1, Canon's advantages, brand and powerful lens group, and the colors when taking portraits are more popular with girls. 2, Nikon's single, focused, high sense, after listening to others say that Nikon's lens is cheaper than Canon's.

2. First of all, advantages: Nikon cameras are made of better materials and have higher reliability than Canon. The focusing technology and imaging quality are also very good, and the reputation among consumers is still very good. Nikon's night scene effect is also outstanding, suitable for people who need night shooting.

For ordinary consumers, there is no obvious difference between Nikon and Canon's low-end fuselage and lens. Nikon camera has better texture and stronger focus; Canon cameras have better design and higher resolution.

4. Nikon said Canon first. In the AF era, Canon was ahead of the times in electronicization by virtue of EF bayonet. Canon SLR is characterized by fine picture quality and soft color, which is generally considered to be more suitable for portraits.

Sony is a new brand. It used to be Konica Minolta. I think its advantage is that it dares to innovate (live autofocus, the highest pixel of 135 system is 24.6 million). Moreover, Sony has money and is supported by Chase and Minolta lenses. It has the strength to produce CCDCMOS, and the price of the fuselage is also cheaper than Nikon Canon.

6. Canon color reproduction is more realistic. Compared with soft imaging, I think it's ok. Soft and sharp are not exactly the same concept. For Nikon, the overall picture is bright and the contrast is strong. The effect of direct filming is excellent. Sony's color has its own characteristics, because Sony's SLR heads are all certified by carl zeiss.

Characteristics of digital cameras

1, so compared with traditional photography, the most important feature of digital photography is that you can see the picture immediately after taking pictures, which makes it possible for dissatisfied works to be retaken immediately and reduces the occurrence of regrets. Just pay for those photos you want to develop, and other unnecessary photos can be deleted.

2. Basic features of more accurate framing of digital cameras: The unique design of the mirror and prism of SLR cameras allows photographers to observe images directly through the lens from the viewfinder. So the images seen by the photographer are completely consistent with the images taken.

3. At present, 10 times large optical zoom lens is widely used in digital camera products, and some products even reach 33 times. The large zoom lens will not have much influence on the imaging quality when shooting, and it will be very convenient when shooting large scenes.

The biggest advantage of digital camera is its high definition. Generally, a traditional camera has only 300,000 to 400,000 pixels, while a digital camera needs at least 1 10,000. The preview of analog camera is much clearer than the playback, while the playback and preview of digital camera can be seen clearly.

5. Because the area of CCD is relatively small, it is difficult to obtain good shallow depth of field effect. The shutter lag is relatively long, unlike digital SLR, which is easy to capture people's expressions instantly, which is not conducive to snapshot. The camera does not provide the option of higher ISO, or under high ISO, the noise is high and the picture is rough.