如何从不同类型的相机中选择数码相机 - 选择相机的提示
相机是一种用于将图像捕获为表单的仪器，稍后可以访问。相机有很多类型。紧凑型相机，紧凑的数码相机，单镜头反射或SLR相机以及数字单镜头反射或DSLR摄像机是最常见的类型。也有较少流行的类型，例如双镜头反射（TLR）。专业和爱好摄影师中最受欢迎的类型是SLR。由于它提供了惊人的照片质量，可靠性，对镜头的控制和产品支持，因此SLR相机几乎占了专业摄影领域的100％。SLR摄像机有两种类型，一种是使用35mm胶片的早期模型，另一种是使用数字传感器。数字SLR摄像机比电影SLR摄像机更昂贵。但是它们非常有用，因为您实际上可以在处理图像之前就可以看到它，而且胶卷没有成本。DSLR摄像机也有其他几个优势。 You don’t have to carry bulky film roll sets. Any mistake in a shot can be easily corrected by taking another shot. Corrections using computer software is very easy. Photo quality is much higher, and larger enlargements can be acquired. DSLR cameras have much more accurate and easy methods, such as autofocus. Therefore, almost zero film cameras are produced now, and the market is totally occupied by the digital cameras. Main focus of this article is to guide a user to select a good DSLR camera. The first thing a user should look for is a reputed brand. Nikon, Canon, Sony, Olympus, Pentax, Fujifilm, Vivitar, Panasonic and Kodak are some of the reputed brands. A user must also look at the quality, mega pixel value, lens properties, sensor type, FPS rate, Image stabilization and various other features when buying a camera.
相机的分辨率是用户购买相机时必须考虑的主要事实之一。这也称为百万像素值。像素是单个照片敏感元素。相机的传感器由数百万这些传感器组成。相机的百万像素值在相机中以数百万计的传感器元素数量。例如，12.1MP摄像机在传感器中内置了1210万像素。高分辨率传感器意味着高质量的照片。正常的紧凑型数字摄像机和入门级数码单反相机的百万像素值范围从7 MP到约16 MP。专业摄像头可能具有高达28或30百万像素的决议。另一个非常重要的因素，大多数消费者都错过了传感器的大小。
The area of the sensor is just as important as the resolution of the sensor. A sensor with a large area can produce very sharp images that would look astonishing in enlarges. Same megapixel value compacted to a smaller sensor area would give low quality images than the high area one. Both the megapixel value and the sensor size must be considered when buying a camera.
ISO值范围is also an important feature. The ISO value of the sensor means how much sensitive the sensor is to a given quantum of light. This feature is very important in night shots and sports and action photography. A sports photographer has to use very high shutter speeds to take still images of fast moving subjects, thus reducing the amount of light incident on the sensor. Therefore, the sensor must be kept to a high value in order to capture the right amount of brightness. But increasing the ISO value has a drawback. In digital sensors, ISO value is increased by amplifying the incident signal. This amplification process also causes the noise in the signal to be amplified. This noise produces a significant amount of grain in the image. This grain is seen in normal images and has a drastic effect on enlarged photographs. This can be reduced using computer software, but it causes loss of sharpness. The best option is to go for the lowest ISO value possible when taking a photo. But having a high ISO value is always useful.
Frames per second rate, or more commonly known as FPS rate, is also an important aspect when it comes to sports, wildlife and action photography. FPS rate means the mean number of photos the camera can shoot per second on a certain setting. When it comes to fields like weddings, sports, and wildlife, capturing the right moment is very important. If the right moment is not captured it is passed, and would probably never happen again. Therefore, it’s important to press continuously the shutter, and get as many images as you can of a good moment, if you are not a perfect timer in photography. It also must be noted that high resolution images take longer to store, thereby, increasing the time between two shoots. The RAM of the camera also plays a vital part in FPS rate. The picture format is also important. So the best option is to go for a camera with a good frames per second rate.
自动对焦点or AF points are the points, which are built into the memory of the camera. If the priority is given to an AF point, camera will use its autofocus ability to focus the lens to the object in the given AF point. Most compact cameras only have 1 AF point at the center. But DSLR cameras have large numbers of AF points, up to 45 or even more. AF points are important in framing a shot. If you want the object, which is in focus, to the side of the photograph, you can use the relevant AF point to focus on the side instead of the center. But too many AF points also tend to clutter the display and make it harder to select the right point. Best option would be to select a model with a moderate number of AF points.
显示屏的实时视图和灵活性是什么？Most of the modern DSLR cameras come with live view. Live view is the ability to use the LCD as a viewfinder. This can be convenient because the LCD gives a clear preview of the picture in good colors. So it is good to go for a camera with live view, if not the viewfinder must be used all the time in order to compose the image. Most of the modern DSLR cameras have a vary angle LCD, which can be very handy when taking extreme angle photographs. The rotatable display can be very helpful in composing difficult news and artistic shots.
产品重量意味着沉重的lugga太多了ge. That’s one thing we try to omit in our regular trips. But most of the high performance cameras weigh more than what we might anticipate. So the best option would be to go for a camera that has what you need, and the weight is tolerable. When it comes to the dimensions of the camera, both too small and too big are bad. A camera body too small means the buttons are all cluttered, and the camera is too hard to hold. A camera too big would cause more problems with limited availability of space, when going on a family trip. It might be wise to select a camera that has a medium sized body.