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The basics

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ADVANCED PHOTOSHOP ELEMENTS 5.0 FOR DIGITAL PHOTOGRAPHERS<br />

9.03 Exposure<br />

Suitable for Elements – 5.0, 4.0, 3.0, 2.0, 1.0 | Diffi culty<br />

level – Basic | Related techniques – 2.03, 9.11<br />

As the lighting conditions can change<br />

dramatically whilst capturing the sequence<br />

of images you need to make up a panorama,<br />

it is important that the camera’s exposure<br />

be set manually. Leaving the camera set to<br />

auto exposure (Program, Aperture priority or<br />

Shutter speed priority) will result in changes in<br />

brightness of sequential images, especially if you<br />

Manual exposure >> Set your<br />

are capturing pictures throughout a full 360˚<br />

camera to manual exposure to<br />

sweep of the scene.<br />

ensure consistency across the<br />

sequence of images.<br />

Take readings from both the shadow and highlight areas in several<br />

sections of the environment before selecting an average exposure setting, or one that preserves<br />

important highlight or shadow detail. Lock this shutter speed and aperture combination into<br />

your camera and use the same settings for all the source images. If the scene contains massive<br />

changes in brightness this will mean that some parts of the picture are rendered pure white or<br />

pure black (with no details); so you may want to consider using the steps in technique 9.11 as<br />

a way of capturing more details in these areas. To ensure that you have suffi cient picture data<br />

to complete the technique capture two or three complete sequences with varying exposures.<br />

<strong>The</strong> exposure for one sequence should be adjusted to record highlights; one for shadows and if<br />

required a third can be used to capture mid tones.<br />

Use your camera’s exposure bracketing system to shoot the over-, mid and<br />

underexposures automatically.<br />

Average<br />

exposure>><br />

To help ensure<br />

that your<br />

exposure setting is<br />

suitable for all the<br />

source images<br />

take several<br />

readings from all<br />

over the scene<br />

and then change<br />

your camera to<br />

the average of<br />

these results.<br />

Book resources at: www.adv-elements.com<br />

225<br />

MAKING BETTER PANORAMAS

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