Olympus VT1621-01 User Manual Page 106

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104
Selecting Image Quality, Resolution, and Compression (continued)
1:1
2240 x 1680
Compression
Resolution
11.3MB*
* All MB/KB file sizes are approximate estimations.
1600 x 1200
1280 x 960 (SXGA)
1024 x 768 (XGA)
640 x 480 (VGA)
1:2.7
2.8MB
1.5MB
940KB
610KB
260KB
1:4
2MB
1MB
650KB
420KB
180KB
1:8
1MB
510KB
340KB
230KB
110KB
Setting resolution and compression
You can change the resolution and compressions settings for each of the four quality settings.
The resolution and compression settings for each quality setting can be adjusted within the following
ranges.
Resolution
Images created from pictures taken with a digital camera are composed of vertical and horizontal
colored dots called pixels. In the notation 2240 x 1680, for example, 2240 is the number of
horizontal pixels and 1680 is the number of vertical pixels. The greater the number of pixels in an
image, the finer the quality and the larger the file size. Please remember that high quality images
require more storage space on a memory card, thus reducing the number of images that can be
stored on the card. Select as high a resolution as possible if you intend to trim the image, or enlarge
the image larger than standard service size for printing.
Compression
The compression rate denotes the amount of JPEG compression. The higher the compression rate,
the smaller the file size. However, the higher the compression rate, the more the image could
deteriorate. With compression rates below 1:8 the amount of image deterioration is not noticeable,
but if you are concerned about image quality then select a smaller compression rate like 1:4 or
1:2.7. The effect of the selected rate of compression could vary with the content of the image. These
numbers provide only a general scale for reference and are not precise measurements.
The table below describes the relationship between resolution, compression and approximate file
size.
Note
Less time is required to store smaller files on a memory card, with the exception of the 640 x 480
(VGA) selection which could require more time for compression as the file is saved.
2240 x 1680 pixels (FULL)
(non-adjustable)
2240 x 1680 pixels (FULL)
1600 x 1200 pixels (HALF)
1280 x 960 pixels (SXGA)
1024 x 768 pixels (XGA)
640 x 480 pixels (VGA)
Approx. 1:2.7
Approx. 1:4
Approx. 1:8
Compression
Quality
Resolution
TIFF
SHQ
HQ
SQ
1:1 (non-compressed)
(non-adjustable)
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