Concepts in Photography

ISO sensitivity

The exposure of an image is determined by the sensitivity of the camera. This sensitivity is based on international film standards, known as ISO standards. On digital cameras, this sensitivity rating is used

to represent the sensitivity of the digital mechanism that captures the image.

ISO sensitivity doubles as the number doubles. For example, an ISO 200 setting is capable of capturing images at twice the speed of an ISO 100 setting. However, higher ISO settings can result in “noise”—small specks, spots, and other phenomena in a photo that give the shot

a noisy or dirty appearance. As a general rule, it is best to use a low ISO setting to prevent noise in your photos, unless you are shooting in darkened environments or at night.

Changes in the quality and brightness according to ISO sensitivity

Because a low ISO sensitivity means the camera will be less sensitive to light, you need more light to have an optimal exposure. When using a low ISO sensitivity, open the aperture more or reduce the shutter speed to allow more light to enter the camera. For example, on a sunny day when light is abundant, a low ISO sensitivity does not require a low shutter speed. However, in a dark place or at night, a low ISO sensitivity and a fast shutter speed will result in a blurry photo.

A photo taken with a tripod and high

A blurred photo with a low ISO sensitivity

sensitivity

 

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Samsung NX100 user manual ISO sensitivity
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NX100 specifications

The Samsung NX100, launched in 2010, marked a significant entry into the mirrorless camera market, showcasing the brand’s commitment to innovation and style in photography. This compact system camera combined versatility with advanced technology, appealing to both amateur and professional photographers alike.

One of the main features of the NX100 is its 14.6-megapixel APS-C CMOS sensor, which delivers stunning image quality and excellent low-light performance. This sensor size is comparable to that found in many DSLRs, allowing for greater depth of field and better control over exposure. The impressive image resolution enables photographers to capture intricate details without sacrificing clarity, making it ideal for large prints.

In terms of design, the NX100 boasts a sleek and stylish body that is both lightweight and compact, making it easily portable for photography on the go. The camera features a detachable lens system, compatible with Samsung's NX mount lenses, allowing users to tailor their equipment to the specific needs of their shoots. The standard 20-50mm lens provides great versatility for everyday photography.

The NX100 incorporates a Hybrid AF system, combining contrast detection and phase detection to achieve fast and accurate focus, an essential feature for capturing moving subjects. Furthermore, the camera supports continuous shooting at 3 frames per second, enabling users to capture action sequences with ease.

Another notable characteristic of the NX100 is its 3-inch AMOLED display, which offers vibrant colors and excellent viewing angles. This display is crucial for composing shots and reviewing images in varying lighting conditions. Additionally, the camera includes manual control options, giving experienced photographers the flexibility to adjust settings such as shutter speed and aperture, while also providing automatic modes for those looking for ease of use.

The camera's integrated Smart Filter effects allow for creative expression directly in-camera, offering options like Soft Focus, Vignette, and Miniature effects. These filters enhance the creative potential and make experimentation more accessible for users.

Enhanced connectivity is also a key feature, as the NX100 includes Samsung's i-Function technology, allowing users to adjust settings directly from the lens using designated buttons for a seamless shooting experience. The ability to connect via USB and HDMI provides additional convenience for sharing images and videos directly to external devices.

In summary, the Samsung NX100 reflects a blend of sophisticated imaging technology and user-friendly design. Its APS-C sensor, compact build, and innovative features create an appealing option for anyone looking to dive into the world of photography or expand their creative toolkit.
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