Setting the Exposure

Effect of Shutter Speed and Effect of Aperture

Aperture and shutter speed determine the exposure to light. You can create many interesting effects once you understand these aspects.

Effect of Shutter Speed

Shutter speed is the length of time the shutter is open. You can enjoy many interesting effects by adjusting the shutter speed.

Using slower shutter speed

A low shutter speed blurs motion on the image. You can feel the speed in the picture on the right.

Aperture: f = 8, Shutter Speed: 1/15sec

Using faster shutter speed

A fast shutter speed is essential for capturing the movement. A faster shutter speed froze the same shot as shown on the right.

Aperture: f = 8, Shutter Speed: 1/125sec

Effect of the Aperture

The aperture stop of a lens can be adjusted to control the amount of light reaching the image sensor. This is similar to the way the pupil of the human eyes reacts to bright light. The next image shows

how the aperture is adjusted to a different size according to the corresponding aperture stop described in the lens. (The image may be different from the actual product and does not represent a specific lens model.)

Opening the aperture (reduce the aperture value)

Objects closer and further away than the focused subject will be out of focus.

You will see that the background is out of focus when you focus on the subject.

Aperture: f = 2.8, Shutter Speed: 1/500sec

Closing the aperture (increase the aperture value)

The range in focus expands forward and backward.

You will see that both the subject and the background are all in focus if you use a high aperture stop.

Aperture: f = 11, Shutter Speed: 1/500sec

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Samsung GX-20 manual Effect of Shutter Speed and Effect of Aperture, Effect of the Aperture, Using slower shutter speed

GX-20 specifications

The Samsung GX-20 is a notable digital single-lens reflex (DSLR) camera that debuted in 2007, capturing the interest of photography enthusiasts and professionals alike. As part of Samsung's foray into the DSLR market, the GX-20 offers a range of features and technologies designed to enhance the photography experience.

At the core of the GX-20 lies its 14.6-megapixel APS-C size CCD sensor, which provides high-resolution images with excellent detail and clarity. This sensor allows for a wide ISO range, from 100 to 6400, giving photographers the flexibility to capture images in various lighting conditions without sacrificing image quality.

One of the standout features of the GX-20 is its dual image stabilization system, which employs both sensor-shift technology and optical lens stabilization. This combination helps reduce the impact of camera shake, allowing for sharper images, especially in low-light environments or when using telephoto lenses.

The camera's design is both ergonomic and sturdy, featuring a weather-sealed body that ensures durability when shooting in challenging weather conditions. The 2.7-inch LCD screen provides a clear view for composing shots and reviewing images, and it incorporates live view functionality, enabling users to shoot from different angles easily.

In terms of autofocus, the GX-20 is equipped with a 11-point autofocus system, which enhances focus accuracy and speed. Photographers can choose between multiple autofocus modes, including single-shot, continuous, and manual focus, providing flexibility for various shooting scenarios.

Additionally, the GX-20 supports a range of advanced shooting modes, including face detection, scene modes, and exposure bracketing, allowing users to easily adapt to different photography styles. The camera also incorporates an in-camera RAW processing feature, enabling photographers to edit their images without the need for external software.

Connectivity options on the GX-20 include USB 2.0 for data transfer and support for SD/SDHC memory cards for storage. With an average battery life of approximately 600 shots, users can confidently shoot without the constant worry of running out of power.

Overall, the Samsung GX-20 represents a solid choice for both amateur and seasoned photographers. With its blend of high-resolution imaging, robust performance, and thoughtful design, it offers an appealing package that stands the test of time in the ever-evolving world of digital photography.