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(50mm/25mm=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。这些叶片同时移动,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-NX100ZBABPL, EV-NX100ZBABDE, EV-NX100ZBABIT 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-NX100ZBABPL, EV-NX100ZBABHU, EV-NX100ZBAWIT, EV-NX100ZBABSE, EV-NX100ZBABCZ specifications

The Samsung EV-NX100 series, comprising models EV-NX100ZBABDE, EV-NX100ZBAWDK, EV-NX100ZBBBSE, EV-NX100ZBABDK, and EV-NX100ZBAWSE, offers a blend of advanced technology and user-friendly features aimed at both photography enthusiasts and casual users. These models are compact system cameras that provide impressive image quality driven by their APS-C sensors.

At the heart of the EV-NX100 series is the 20.3-megapixel APS-C CMOS sensor, delivering rich, vibrant colors and exceptional detail, even in low-light conditions. This large sensor is a significant advantage compared to traditional compact cameras, allowing users to capture stunning images with a shallow depth of field, creating beautiful bokeh effects.

One of the standout features of the EV-NX100 series is the lens versatility. The models are compatible with a range of interchangeable lenses, making it easy to adapt to different photography styles. This flexibility, combined with a fast autofocus system, ensures that users can quickly capture fleeting moments with precision.

Samsung has also integrated Wi-Fi connectivity into these models, enabling easy sharing of images to social media platforms or transferring to smartphones and tablets. This feature is particularly appealing in today's social media-driven environment, making it effortless to showcase photographic works on the go.

Another notable characteristic is the Smart Mode feature, which offers a variety of scene modes tailored for specific shooting conditions. Users can choose modes such as Night, Macro, or Landscape, allowing them to achieve optimal results without extensive manual adjustments.

The EV-NX100 series is designed for ease of use, featuring a customizable user interface and a clear LCD screen for intuitive navigation. Many users will appreciate the in-camera editing options, which allow for basic adjustments on the fly, ensuring that images are ready for sharing instantly.

Battery life is also commendable, with the ability to capture hundreds of shots on a single charge, making these cameras ideal for both day trips and extended photography sessions.

Overall, the Samsung EV-NX100 series represents a thoughtful integration of powerful photographic capabilities and user-friendly features, making them a suitable choice for anyone looking to elevate their photography experience, whether they're a seasoned photographer or just starting their journey.