Glossary

AdobeRGB

Colour space recommended by Adobe Systems, Inc. for commercial printing. Wider range of colour reproduction than sRGB. Covers most of the colour range so colours only available when printed are not lost when editing images from a computer. When image is opened by non-compatible software, the colours look lighter.

AE Metering

Brightness of subject is measured to determine exposure. In this camera, select from

[Multi-segment Metering], [Centre-weighted Metering] and [Spot Metering].

Colour Temperature

This numerically expresses the colour of the light source illuminating the subject. This is indicated in absolute temperature, using Kelvin (K) units. The colour of light shifts to a bluish colour as the colour temperature rises, and to a reddish colour as the colour temperature falls.

DCF (Design rule for Camera File system)

The Design rule for Camera File System was created by the Japan Electronics and Information Technology Industries Association (JEITA).

Aperture

The aperture controls the amount of light that reaches the camera sensor.

Auto Bracket

For automatically changing the shooting conditions. When the shutter button is pressed, three images are shot. The ﬁrst one has no compensation, the second is under-exposed and the third is overexposed.

Camera Shake (Blur)

When the camera moves while the shutter is open, the entire image appears blurred. This occurs more often when shutter speed is low. Prevent camera shake by raising the sensitivity, using the ﬂash, or by using a faster shutter speed. Alternatively, use a tripod to stabilize the camera. Because camera motion causes camera shake, use the self-timer, the remote control unit, and the cable switch to prevent this.

CMOS (Complementary Metal Oxide semi-conductor)

Refers to Complementary metal–oxide–semiconductor (CMOS). It is used in most Digital Single Lens Reﬂex (DSLR) cameras to “convert” light into the camera sensor. The CMOS sensor is an important feature that determines the quality of digital photos.

Colour space

A deﬁned range of colours from the spectrum which are used. In digital cameras, [sRGB] is deﬁned as the standard Colour Space by Exif. In this camera, [AdobeRGB] is also used because of its richer colour expression over sRGB.

DPOF (Digital Print Order Format)

Rules for writing information onto a card with recorded images regarding the speciﬁc images and number of copies to be printed. Prints can easily be made by taking images to a DPOF photo printing store.

Depth of Field

Area of focus. This depends on the aperture, lens focal length, and distance to the sub- ject. For example, select a smaller aperture to increase the depth of ﬁeld or use a larger aperture to decrease the depth of ﬁeld.

DNG RAW ﬁle

DNG (Digital Negative) is a general-purpose RAW ﬁle format designed by Adobe Systems.

Exposure

Total amount of light allowed to fall on the photographic medium.

Exposure is determined by the combination of the aperture value and the shutter speed.

EV (Exposure Value)

EV steps are numbers which refer to certain combinations of lens aperture and shutter speed. There is one EV step difference between the aperture stop 4 and 5.6 for example.

EV Compensation

Process of adjusting the image brightness by changing the shutter speed and aperture value.

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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.

Samsung GX-20 manual Glossary

Models: GX-20