About SLR cameras?

Brand: Canon, Nikon, Sony, Pentax, Olympus, Panasonic, Samsung.

There are many other machinery manufacturers.

Personally recommend Canon, because it is a Canon user, you can start with 550D, with good performance and functions suitable for the needs of public learning and use.

The website can go to: Hummingbird, Home Ownership, Wuji. These are relatively large photography websites, and you can learn a lot.

The position and understanding of digital cameras in people's minds have gradually been accustomed to and accepted. As a high-end digital camera, digital SLR cameras used by professionals are gradually entering the families of ordinary people with the continuous decline in prices. What is a digital SLR camera and its characteristics are very interesting questions for people who don't know the camera. Today, let's get to know the digital SLR camera and its advantages over ordinary digital cameras.

Digital SLR technology

First of all, let's learn what a digital SLR camera is. To put it bluntly, a digital SLR camera is a digital camera adopting new SLR technology. As a professional digital camera, the photos taken with it are incomparable in definition and quality. These are the high performance of digital SLR cameras made by SLR technology.

Single lens reflection. The camera using this technology has only one lens, which is responsible for photography and framing. This can basically solve the problem of poor photo quality caused by parallax. Moreover, when a SLR camera is used to view a scene, the light emitted by the object is focused by the lens, reflected by the inclined reflector to the focusing screen for imaging, and then reflected by the "roof prism" raised at the top. Photographers can observe the scene through the viewfinder eyepiece, and it is the same image as the scene, which is convenient for framing and focusing. When shooting, the mirror will bounce up immediately, the lens aperture will automatically shrink to a predetermined value, and the shutter will open to make the film sensitive; After exposure, the shutter is closed and the aperture of the mirror and lens is reset at the same time. This is the SLR technology in cameras. Now digital cameras have become professional digital SLR cameras after adopting this technology.

The single-lens reflective framing method basically means professional positioning, which also doomed the professional road of digital SLR cameras. Even products for ordinary users and enthusiasts have many advantages.

How to choose digital SLR camera ~!

Is DSLR (Digital Single Lens Reflective Camera) a must for ordinary family players? DSLR digital SLR is the pursuit of professional users (journalists, photographers) and photographers! Compared with consumer-grade DC, there is a big gap between DSLR and consumer-grade DC: DSLR brings larger dynamic range (signal-to-noise ratio), replaceable lens, better imaging quality, shorter shutter lag, faster operation and processing speed, more realistic framing, faster continuous shooting speed and more professional control, which are incomparable to consumer-grade DC.

The biggest problem is that the size and weight are larger than those of consumer digital cameras, and accessories such as lens flash filter make digital cameras inconvenient to carry. The second problem is that the CCD/CMOS chip of digital SLR camera is easy to be contaminated with dust. Olympus E- 1 can remove the dust on the surface of CCD/CMOS chip by ultrasonic device, but other brands of digital SLR cameras are still helpless to dust, which seriously affects the imaging quality and service life.

Therefore, Sony F828/ Minolta A2/ Fuji S7000 and other quasi-professional digital cameras will still have strong vitality due to the convenience of "traveling around the world with one mirror", although they are facing a huge blow from the public SLR digital cameras.

1. although there are some "selling points" differences in technical details, it can be considered that there is no difference in essence and no need to study it carefully.

2. Focusing speed, shutter lag and continuous shooting speed are very important for news photography, sports photography, wildlife photography and snapshot photography. For digital SLR cameras, the improvement of performance is accompanied by a sharp increase in price.

3. Life of the fuselage The shutter life of a general SLR camera is 50,000 times, the life of a high-end SLR camera can reach 8-65438+ 10,000 times, and the longest life of a professional SLR camera can reach more than150,000 times. In practical use, if the high-speed continuous shooting function is often used, the shutter life will be reduced. The service life of LCD screen is about 1000 hours. Reflective framing system is a component that affects the life of digital SLR cameras. Frequent and high-load use can easily lead to the failure of reflective frame system.

4. The camera with high reliability will be dustproof, waterproof and impact-resistant. Because of the metal body and special materials, the price of such a camera will be high.

5. Color space In addition to sRGB as the standard color space for Windows and inkjet printers, you can also choose Adobe RGB, which is more widely used. You can choose the best color space according to the purpose of photography.

6. Flash system For professional photographers, the metering and exposure system of flash is very important. In the automation of flash system, each manufacturer has its own unique skills. There is no best or worst, only the best.

7. The advantage of lens group digital SLR camera is that it can change lenses. Whether the original lens series support and the products of independent lens manufacturers are rich enough to meet your needs is a problem worthy of attention.

8. Do you support W/A reading and writing acceleration technology? All digital SLR cameras released after the fall of 2003 will support W/A reading and writing acceleration technology. With this technology, the speed of reading and writing CF cards can reach more than 40 times (6MB/S).

9. Transmission Interface Digital SLR cameras released after the fall of 2003 should have both USB2.0 and 1394 firewire terminals. Some cameras should also support wireless network transmission such as 802. 1 1b/g and Bluetooth.

10. Photosensitive sensitivity and noise suppression Higher sensitivity and better noise suppression are our pursuit.

1 1. Shutter Maximum shutter speed and slowest shutter speed (B-door) are two key indexes of digital SLR camera shutter. The reliability and accuracy of the shutter also need attention. The highest flash synchronization speed is also a sign to measure whether a digital SLR camera is advanced or not.

12. whether the handle, shape and weight of the fuselage are suitable or not is often the most important place to decide to buy a SLR camera. Regardless of the price, the size and weight of professional digital SLR cameras are not acceptable to everyone. Small and lightweight amateur digital SLR cameras are more suitable for ordinary people.

13. Psychology often plays a decisive role in the end, and rational consumption is very important.

Summary: At present, digital SLR cameras are monopolized by a few manufacturers, and it is an absolute truth in the field of digital SLR cameras to get what you pay for. In order to meet the high-load and high-intensity professional photography, it is best to choose an expensive digital SLR camera. If it's just hobbies and fun, it's best to choose economy.