摄影中的概念

 

 

 

 

 

光圈大小由称为焦距比数的值表示。焦距比数表示焦距除以镜头

直径。例如,如果具有 50 mm 焦距的镜头的焦距比数为 F2,则光圈

的直径为 25 mm(50 mm/25 mm=F2) 焦距比数越小,光圈越大。

光圈中的开口称为曝光值 (EV)。曝光值增加 (+1 EV) 意味着光量增加

一倍。曝光值减少 (-1 EV) 意味着光量减半。您还可以使用曝光补偿功

能微调光量,细分曝光值为 1/21/3 EV,以此类推。

 

+1 EV

 

-1 EV

 

 

 

F1.4

F2

F2.8

F4

F5.6

F8

 

 

曝光值间隔

 

 

曝光值和景深

您可以通过控制光圈使相片背景模糊或清晰。这与景深 (DOF) 密切相 关,景深可表示为小或大。

使用大景深拍摄的相片 使用小景深拍摄的相片

光圈罩包含数个叶片。这些叶片一块移动,控制通过光圈中心的光量。叶片 数还影响拍摄夜景时的光形状。如果光圈有偶数个的叶片,则光会分割为相 等个数的部分。如果叶片个数为奇数,则部分数是叶片数的两倍。

例如,具有 8 个叶片的光圈将光分割为 8 个部分,具有 7 个叶片的光圈将 光分割为 14 个部分。

7 个叶片

8 个叶片

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Samsung EV-NX1000BABRO, EV-NX1000BABDE, EV-NX1000BFWDE 曝光值和景深, 光圈大小由称为焦距比数的值表示。焦距比数表示焦距除以镜头, 能微调光量,细分曝光值为 1/2、1/3 EV,以此类推。

EV-NX1000BABSE, EV-NX1000BFWDK, EV-NX1000BABRO, EV-NX1100BFWHU, EV-NX1000BFWSE specifications

The Samsung EV-NX1000 is a versatile and compact digital camera that blends cutting-edge technology with user-friendly features, making it an excellent choice for photography enthusiasts of all levels. It is available in various stylish designs, including the EV-NX1000BABDK, EV-NX1000BFWSE, EV-NX1000BFWDK, and EV-NX1000BABSE, each offering unique aesthetics while maintaining the same core functionalities.

One of the standout features of the EV-NX1000 series is its 20.3-megapixel APS-C CMOS sensor, which provides stunning image clarity and sharpness. This larger sensor allows for better low-light performance compared to typical compact cameras, enabling users to capture high-quality images even in challenging lighting conditions. The sensor works in conjunction with the impressive DRIMe IV image processor, which enhances color accuracy and reduces noise, delivering vibrant images with excellent detail.

The NX1000 is equipped with a 3-inch tilt and swivel LCD screen, allowing users to compose shots from various angles easily. The display is also touch-sensitive, providing a more interactive shooting experience. Additionally, the camera features a fast autofocus system, ensuring quick and accurate focus on subjects, which is crucial for capturing fleeting moments.

Another significant characteristic of the EV-NX1000 series is its built-in Wi-Fi connectivity. This feature allows users to effortlessly share images and videos to their smartphones and other devices, making it simple to upload photos directly to social media platforms. Moreover, the camera supports remote shooting via a smartphone app, providing added convenience for self-portraits or group photos.

The NX1000 also offers a range of versatile shooting modes, including Smart Auto, which automatically selects the optimal settings for the environment, as well as various artistic filters and scene modes that encourage creativity. Furthermore, the camera is compatible with interchangeable lenses, allowing users to expand their photographic capabilities according to their needs.

With its elegant designs, advanced features, and user-friendly technologies, the Samsung EV-NX1000 series is a commendable camera suited for both novice and experienced photographers. Its combination of portability, performance, and connectivity options makes it an appealing option for those looking to elevate their photography skills while enjoying the convenience of modern technology.