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如何选择数码相机从不同的类型Of Camera

2011年9月3日发表行政

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.

什么是相机的分辨率?

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.

什么是ISO性能?

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.

什么是每二率的帧?

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.

什么是快门滞后和恢复时间?

一旦按下快门释放,DSLR将不会立即拍摄照片。在大多数情况下,按下按钮后,将进行自动聚焦和自动白色平衡。因此,新闻界和实际照片之间存在时间差距。这就是相机的快门滞后。如果有较高的快门滞后,我们可能无法准确捕获我们想要的东西。这在诸如景观,肖像或宏观摄影之类的领域并不重要,但是在动作,体育,婚礼和野生动植物摄影中非常重要。恢复时间是拍摄第一张照片后拍摄第二张照片所花费的时间。如果您不是一个好的计时器,这非常重要。因此,最好的选择是选择较小的快门滞后和良好恢复时间的相机。

什么是自动对焦点的数量?

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.

什么是高清电影录制?

高清电影或高清电影对应于比标准定义电影高的电影。高清电影模式为720p和1080p。720p的尺寸为1280×720像素,而1080p的尺寸为1920×1080像素。1080p视频比720p视频更清晰和清晰。但是,与720p视频相比,创建1080p视频需要大量的处理能力。一些数码单反相机具有720p视频;有些有1080p视频,有些只有运动JPEG,这不是高清视频模式。如果您是专业摄影师,则根本不需要视频录制。如果您是普通用户,则可能需要检查相机中是否有HD视频。即使是720p的家庭视频也会看起来很棒。

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.

重量和尺寸

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.

存储中等和容量

在数码单反相机中,内置的内存几乎可以忽略不计。需要外部存储设备来保存图像。一些相机仅支持特定品牌和内存卡的模型。但是,大多数相机都是用于通用SD,SDHC和SDXC卡的。最好选择SDHC或SDXC卡,因为它们可以具有很高的内存能力和更快的读写速度。相机可以处理的最大存储空间也很重要,因为它决定了您可以存储在一张卡中的最大照片数量。一个好的摄影练习是在新射击中使用空白卡。并且更有可能在存储之前用完电源。如果一张卡的存储不足,建议使用备用存储卡。容量很高的存储卡也会导致恢复时间损失,并会减慢相机的速度。

电池寿命和闪光灯

相机的电池寿命非常重要。它告诉我们可以单一收费的照片的大约数量。这对于不容易获得动力的户外摄影非常重要。如果相机可以在诸如AA电池之类的架子电池上使用,那么拥有额外的电池将很方便。也可以购买任何相机的备用电池,但比AA电池贵得多。也可以检查是否有内部弹出式闪光灯和适配器的鞋子用于外部闪光灯。

选择最佳相机

这完全取决于您想要的相机。业余爱好者的价格适中,但具有良好价值的相机,例如分辨率,ISO,FPS,快门滞后等关键功能。但这意味着减轻体重和外观。专业人士将配备具有所有关键功能以及中等体型和良好电池寿命的相机。您必须检查的主要内容之一是,是否有一项良好的服务以及该型号可用的零件。品牌中的大多数镜头都是可以互换的,并且可以与任何型号一起使用。但是有些镜头是针对特定的摄像头制作的,不能与其他镜头一起使用。必须检查的另一点是身体是否包含传感器清洁机制。否则,灰尘颗粒将放在传感器上,图像将没有用。

相关文章:

SLR和DSLR之间的差异 SLR和数码相机之间的区别 数码相机和HandyCam之间的区别 孔径和F-Stop之间的区别 全高清LCD电视和HD Ready LCD电视之间的区别

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