What is the most basic configuration for using a SLR digital camera?

Digital SLR has developed rapidly in the past two years, especially the entry-level SLR, and its price is getting lower and lower, even cheaper than some super consumer models. Although the super consumer machine is much better than the digital SLR in function, for example, have you seen a digital SLR that can shoot short films? But when it comes to the image quality of photos, even the entry-level SLR has advantages. Olympus E-500 sets of reference price (5200 yuan 17.5-45mm lens, 5600 yuan 14-45mm lens) as a digital SLR camera for ordinary consumers, the new E-500 is equipped with the Olympus dust removal system which is highly praised by professional users and ordinary consumers, and it also has high image quality, easy inspection and high quality. Dual memory card slot design with CF card and xD card, BLM- 1 lithium battery or three CR 123A batteries with lithium battery rack. The E-500 is equipped with an 8-megapixel 4/3 Quan Huafu transmission primary color CCD, which ensures the leading image quality of similar cameras. With a wide dynamic range and rich timbre expression ability, these excellent characteristics have been widely praised for their good performance on the E-300 fuselage. By combining the ZUIKO DIGITAL high-performance lens specially designed for digital cameras, it can provide the leading resolution and high image quality in its class. After the price reduction, the E-500 has become the lowest-priced digital SLR at present, with good cost performance. In addition, in SLR cameras, in addition to the expensive XD card, you can also use a much cheaper ordinary CF card, which is commendable. Pentax *ist DL reference price: 5880 yuan (with 15-55mm lens). The overall design of Pentax *ist DL is not much different from that of *ist DS. In terms of configuration, *ist DL adopts a CCD sensor of 23.5mm× 15.7mm, with an effective pixel of 665438+ million. In addition, efficient 16 area metering technology, accurate AF focusing system and 1/4000 second high-speed shutter are adopted. 2.5-inch high-definition screen, 2/kloc-0.0 million pixels, thin body, compared with the general digital SLR camera, the biggest feature is the use of 4 AA batteries and SD card expansion. With the continuous decline in the price of SLR digital cameras, the original seemingly unattainable SLR digital cameras are getting closer and closer to everyone. Now the price of the fuselage is equivalent to a high-pixel digital camera with irreplaceable lens, which also makes more photographers turn their attention to SLR digital cameras. After all, everyone has a traditional film camera and one or two lenses in his hand, so can the lens in his hand be used? When buying a SLR digital camera, what problems should be considered in lens configuration? Whether the unified lens can be used in SLR digital cameras. Generally speaking, photographers who choose SLR digital cameras are very concerned about the imaging quality. In addition, they are often the owners of traditional SLR cameras. Considering the continuous use of the original camera lens, these are the reasons for choosing a SLR digital camera. So what are the advantages and disadvantages of using traditional film camera lens in SLR digital camera? Advantages: 1 You only need to buy the fuselage, and the original lens in your hand can continue to be used, saving the investment in purchasing the lens later; 2. Because the image sensor of the SLR digital camera is small, it can shoot more prominent close-up effects through the focal length conversion coefficient, and improve the imaging quality of the lens in disguise, because the edge part with weak imaging does not participate in imaging. Disadvantages: the angle of view of a wide-angle lens will be much smaller. For example, a 20mm wide-angle lens is often only equivalent to the perspective of a 30mm lens. Therefore, after buying a SLR digital camera, if there is a shooting demand in scenery, architecture and so on. Generally speaking, we should consider choosing a new super wide-angle lens. Recognize the situation: digital lens should be the master. At present, every manufacturer will consider the application in SLR digital cameras when introducing new lenses, and make technical improvements to form new digital series lenses. At present, there are two main types of digital lenses: one is universal digital lens. Considering the universality of the lens, the design is based on the full-size image sensor as the imaging starting point. This kind of lens has the characteristics of high resolution, uniform image field, small incident angle and large rear lens group. According to the characteristics of digital camera, the coating, curvature and position of optical lens are optimized, especially considering the interference of glare and ghost, so its technical requirements, manufacturing cost and sales price are also high. On the one hand, this lens can be well used with APS format SLR digital camera, on the other hand, it can also be used with 35mm film camera and full-frame SLR digital camera. When this lens is used in a SLR digital camera, its focal length value needs to be multiplied by the focal length conversion coefficient. At present, in addition to some original lenses such as Nikon and Canon, Konica Minolta and Pentax have also launched universal digital lenses that take into account both SLR digital cameras and SLR film cameras with the launch of their own brand SLR digital cameras. Other representative brands include Longteng's Di and Sigma's DG series lenses. The other is a special digital lens for SLR digital cameras. Specially designed for non-full-frame SLR digital camera, with APS size image sensor as the imaging starting point. Because of the small image field, the number and diameter of lenses can be reduced while improving the resolution of lenses, and the lens structure is simple and small.