How to choose a SLR camera in Hong Kong?

When buying, you need to pay attention to distinguish whether the machine is brand new. SLR can check the old and new by the number of shutters, and can check related knowledge online. All the new machines have zero shutters.

The new machine can visually inspect the appearance of the new machine, smell whether there is fresh oil surface, generally scattered incense, whether the machine chip or battery has contacts, etc.

SLRcamera is also called SLR camera. Refers to a camera that uses a single lens, through which light shines on the reflector and takes a view through reflection. The so-called "single lens" means that the photographic exposure light path and the framing light path * * * use one lens, unlike the paraxial camera or the double-reflex camera, the framing light path has an independent lens.

"Reflection" means that a plane mirror in the camera separates the two light paths: when the mirror falls during framing, it reflects the light of the lens to the pentaprism and then to the framing window; When shooting, lift the reflector quickly, and the light can shine on the film or photosensitive element CMOS or CCD.

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, DSLR has a big gap:

DSLR brings greater dynamic range (signal-to-noise ratio), interchangeable lenses, better imaging quality, shorter shutter delay, faster operation and processing speed, more realistic framing, faster continuous shooting speed and more professional control, etc. ... which are unmatched by 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 actual 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 reading and writing speed of TF card can reach more than 40 times (25MB/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.