HDR Soft Pro - 5.0 - Windows Bedienungsanleitung PDF herunterladen (Seite 38)

Photomatix Pro 5.0 User Manual 36

AEB Mode

(Automatic Exposure Bracketing)� DSLR cameras and some compact digital cameras

oer this feature� It enables you to automatically take three or more exposures in a

row: one at the proper exposure, one or more underexposed, and one or more over-

exposed�

Aperture Priority

In Aperture Priority mode, you select the aperture and the camera determines the

correct shutter speed for the available light� The shutter speed also depends on ISO

sensitivity� This is the right mode for shooting bracketed shots for HDR (refer to Sec

tion 1 for more information)�

Bit

Bits represent digital data in computers� Digital Images are made of bits� A bit depth

corresponds to 2^(Bit Depth) levels (e�g� 256 for 8-bit)�

Bit Depth

The number of bits a le type uses to represent a pixel's color at a given location in an

image�

Bracketed images

A group of photos taken with the Automatic Exposure Bracketing function of a cam-

era, resulting in photos of the same scene taken with dierent exposures�

Chromatic Aberration

As the lens focuses dierent wavelengths slightly dierently, chromatic aberration

occurs� For example, the purple fringing you often nd around edges (leaves in front

of a bright sky)�

Contrast Ratio

Another way to describe the dynamic range of a scene� The ratio between the darkest

and brightest areas�

dSLR

Digital Single Lens Reex camera�

Dynamic Range

In the context of photography, the total range of light intensity in a scene, from the

deepest shadows to the brightest highlights�

EXIF

The Exchangeable Image File header contains information about the image, the cam-

era, location, date and time and camera settings�

Exposure

The amount of light that enters a camera for the length of time the shutter is open�

Exposure depends on aperture and shutter speed, as well as the camera’s sensitiv-

ity to light (controlled by the ISO)� "Exposure" is also shorthand for a photograph or

frame (a frame of lm)�

Exposure Fusion

Combination of bracketed photos in such a way that highlight details are taken from

the underexposed photos and shadow details from the overexposed ones�

EV (Exposure Value)

A measure of exposure which is the equivalent of a stop� In the absolute sense, EV

is dened as the exposure from a photo taken at 1 second, f/1, and ISO 100� In the

relative sense, the correct exposure is normally 0 EV and any deviation is measured in

positive or negative EV from that mark�

HDR

High Dynamic Range�

Glossary

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