Concepts in Photography

Flash

Light is one of the most important components in photography. It’s not easy, however, to have an enough amount of light anytime and anywhere. Making use of a flash allows you to optimize light settings and create a variety of effects.

Flash, also known as strobe or speed light, helps to create adequate exposure in low-light conditions. It is also useful in light-abundant situations. For example, flash can be used in compensating the exposure of a subject’s shadow or capturing clearly both the subject and the background in backlit conditions.

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Flash guide number

The model number of a flash refers to the flash’s power, and the maximum amount of light created is represented by a value known as a “guide number.” The bigger the guide number, the more light is emitted from the flash. The guide number is achieved by multiplying the distance from the flash to the subject and the aperture value when the ISO sensitivity is set to 100.

Guide number = Flash to Subject Distance X Aperture value

Aperture value = Guide number / Flash to Subject Distance

Flash to Subject Distance = Guide number / Aperture value

Therefore, if you know the guide number of a flash, you can estimate an optimum flash to subject distance when setting the flash manually. For example, if a flash has a guide number of GN 20 and is 4 meters away from the subject, the optimal aperture value is F5.0.

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Samsung NX1000 user manual Flash guide number

NX1000 specifications

The Samsung NX1000 is a compact mirrorless camera that was introduced to cater to photography enthusiasts who desire high-quality images without the bulk of a traditional DSLR. This camera, which debuted in 2012, showcases Samsung's commitment to bringing advanced technology into a user-friendly design.

One of the standout features of the NX1000 is its 20.3-megapixel APS-C CMOS sensor. This large sensor allows for exceptional image quality, capturing detail and clarity in various lighting conditions. The sensor size is comparable to those found in larger DSLRs, making it capable of producing stunning images with shallow depth of field and impressive low-light performance.

The NX1000 also boasts a fast and accurate autofocus system, which includes a contrast-detection autofocus mode. This is complemented by continuous shooting capabilities, allowing users to capture up to 8 frames per second. This feature is particularly useful for action shots and ensuring that perfect moment is never missed.

Another impressive characteristic of the NX1000 is its ISO range, which ranges from 100 to 25,600. This wide range enables users to shoot in various lighting conditions, reducing noise and maintaining image quality even in dim environments. Additionally, the camera's built-in flash along with a hot shoe for external flashes makes it versatile for different shooting scenarios.

The NX1000 features a 3-inch AMOLED screen, which offers vivid colors and excellent viewing angles. This display makes it easier for photographers to frame their shots and review images in bright lighting conditions. The camera’s compact size and lightweight design make it highly portable, allowing photographers to take it on trips or casual outings without feeling weighed down.

For connectivity, the NX1000 includes built-in Wi-Fi, which allows for easy sharing of images to social media or cloud storage directly from the camera. This feature reflects the growing trend of photography in the digital age, where immediacy and connectivity hold significant value.

Furthermore, Samsung has designed the NX1000 to be user-friendly, featuring a range of automatic shooting modes alongside manual settings for those who wish to take full control over their photography. This makes the camera accessible for beginners while still appealing to more advanced users.

In summary, the Samsung NX1000 is a versatile mirrorless camera that combines advanced technology with a lightweight design. Its outstanding sensor, fast autofocus, versatile ISO range, and connectivity options make it a compelling choice for both budding photographers and seasoned professionals looking for a portable option.