Sony Cyber-shot 4-130-938-12(1) - Manual (Page 79)

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The larger the size of the movie image, the higher the image quality. The higher the amount of
data used per second (average bit rate), the smoother the playback image.
The movies shot with this camera will be recorded in MPEG-4, Approx. 30fps, Progressive,
AAC, mp4 format.
• A telephoto image is produced when the [VGA] image size is selected for movies.
• Movies with the size set to [1280×720] can only be recorded on a “Memory Stick PRO Duo” media.
When using recording media other than a “Memory Stick PRO Duo” media, set the movie image size to
[VGA].
When shooting movies
Movie image size Average bit rate Usage guidelines
1280×720(Fine) 9 Mbps Shoot highest quality movies for display
on High Definition TV.
1280×720(Standard)
6 Mbps Shoot standard quality movies for
display on High Definition TV.
VGA 3 Mbps Shoot an image size suitable for WEB
upload.
Notes
z On “image quality” and “image size”
A digital image is made up of a collection of small dots called pixels.
If it contains a large number of pixels, the image becomes large, it takes up more memory,
and the image is displayed in fine detail. “Image size” is shown by the number of pixels.
Although you cannot see the differences on the screen of the camera, the fine detail and data
processing time differ when the image is printed or displayed on a computer screen.
Description of the pixels and the image size
1
Image size: 12M
4000 pixels × 3000 pixels = 12,000,000 pixels
2
Image size: VGA
640 pixels × 480 pixels = 307,200 pixels
Many pixels
(Fine image quality and large file size)
Few pixels
(Rough image quality but small file size)
Pixels
Pixel