What does a professional digital camera look !!!!!like?

A professional camera is a DSLR.

In this system, the unique design of the mirrors and prisms allows the photographer to observe the image passing through the lens directly from the viewfinder. As you can see from the construction of a single-lens reflex camera, the light passing through the lens reaches the mirror, is refracted to the upper focusing screen and forms an image, and through the eyepiece and pentaprism, we can see the outside through the viewing window. When shooting, when the shutter button is pressed, the mirror pops up, and the shutter curtain in front of the film opens at the same time, and the light (image) through the lens is projected onto the film to make the film sensitive, and then the mirror immediately returns to its original state, and the image can be seen in the viewing window again.

This structure of the single-lens reflex camera determines that it is completely shot through the lens focus, it can make the image seen in the viewing window and the film forever the same, its framing range is basically the same as the actual shooting range, eliminating the parallax phenomenon of the rangefinder head-up framing camera, from the perspective of learning photography, it is very conducive to intuitive framing and composition. Another great feature of single-lens reflex cameras is that they can be swapped for lenses of different specifications.

Because the entire imaging system (focusing and shooting) is one lens, there is no parallax, which means that framing and imaging are the same! Most of the traditional cameras are rangefinder!! Secondly, because an imaging system is used as a lens, the coordinated response is faster than that of ordinary machines, so the SLR machine applauds the shooting of high-speed moving objects!

You won't miss out on the good scene because of the slow response of the camera) Thirdly, the SLR uses different camera systems due to the use of lens changes, such as you can change the wide-angle lens, you can lengthen the lens, you can also add color films, you can also choose micro-distance lenses, and so on! to meet your different needs! You won't miss out on the view because of the limited camera lens!

You're asking DSLR!

The full name is single-lens reflex camera, which is essentially different from ordinary digital cameras, mainly in the shutter, the ordinary shutter is closed at the moment of photography, the single-lens reflex is opened and closed at the moment of photography, and there is a replaceable lens for the single-lens reflex, and the ordinary one cannot be changed.

It's complicated to measure the full picture.

1. Tolerance to low pressure.

If the battery of digital camera A is used with a warning display, take it out and put it in camera B, if it can be used normally and there is no alarm, it means that machine B has good low-voltage resistance.

2. The quality of the pixel is burned before.

Camera A shoots the same subject under the same conditions with the same number of pixels set by camera A, and then puts it on the computer for comparison to see which is better, noise or magnification.

Note that don't think it's all the same, in fact, there are big differences in color, magnification effect, etc., and this difference is caused by the quality of the CCD. If the first camera is high and the comparison effect is poor, it means that it is not cost-effective. This does not take into account the largest pixels.

In other words, a camera with a maximum of 20 million pixels can also be compared with a camera with a maximum of 6 million.

3. Noise ratio.

In a low-light environment (e.g., indoor lighting at night), the two cameras set the same sensitivity (set to the highest as possible) to shoot the comparison, and the quality of noisy is poor.

Introduce you to the parameters of digital cameras.

1. The CCD or CMOS size of the sensor is the key to the imaging quality, the larger the size, the better the imaging quality. Generally, it is better to choose more than 1 inch, 1 or 1 inch.

2. The effective pixels of the sensor. The pixel size is what it can print on. With a resolution of 5 million pixels, you can print up to 50 x 75 cm (20x30 inches)**.

In fact, the average household usually only prints inches, and 3 million is enough. At present, almost all models of DC on the market have more than 10 million pixels, so if you buy DC, you can not look at the pixels.

3. Zoom range. 3 to 20 times optical zoom, generally 3 to 4 times is enough, more than 6 times is a telephoto machine; Choose a 28mm lens size for a wide angle; For telephoto, choose more than 200mm; Don't look at digital zoom anymore. Of course, if you can have 28mm wide angle + telephoto, it will be better, you can be more suitable for shooting on various occasions, and you can realize the desire to go all over the world with one shot.

4. a display screen. Inches of more than 200,000 pixels of the display, this kind of display screen display effect is quite good; Of course, there is also a rotatable display to choose from, which will bring more convenience to your framing. To look at the size, but also to look at the pixels, the current inch, 230,000 pixels of the display effect of the display is very good enough, there is no need to deliberately pursue a higher pixel LCD screen, because the high pixel LCD screen is not helpful for imaging.

5. Optical image stabilization is to correct the shake through the optical system, not to make the fuselage not shake, it relies on the structure of a special lens or CCD image sensor to minimize the instability caused by the shake during the use of the operator. The stabilization of the lens group mainly relies on magnetically wrapping the floating lens, so as to effectively overcome the image blur caused by camera vibration, which is very obvious for digital cameras with large zoom lenses. Electronic image stabilization is to analyze the image on the CCD and then use the edge image to compensate, just like optical zoom and digital zoom, it just post-processes the acquired data.

Electronic image stabilization is to reduce the effect of shake by adjusting the parameters to increase the shutter speed, and most of them are achieved by increasing the ISO sensitivity of the camera. Although increasing the ISO sensitivity can indeed have a certain anti-shake effect, its anti-shake effect and optical image stabilization ratio are limited, in addition to the biggest weakness of improving the ISO sensitivity value: **The noise of the picture increases, and the quality decreases.

The electronic image stabilization function only performs post-processing on the collected data, and does not cure the camera shake index.

Aperture: The larger (the smaller the aperture value), the better. Shutter:

The sooner the better. Sensitivity: The wider the ISO range, the better.

Focal length: Select as needed. Scene Mode:

More for the average user. Manual function: For players, the aperture shutter focal length can be manual is best.

Physical pixels: the higher, the better. Sensor area:

The bigger, the better. Lens quality: The higher, the better.

The above is general. There are also differences in requirements for different users and different uses.

Lens stabilization is better than body stabilization; Optics are better than electronic image stabilization.

What do you want to buy** What do you want to use, I'll recommend it for you This kind of question is too wide, I don't know where to start.