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.SETUP. VI Basic Operations
1 Preparations Before Photographing
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Fine: Provides high picture quality but produces large images due to a low
compression rate.
Draft: Provides low picture quality but small file sizes due to high compression
rates.
NOTE: You can also select the file format when saving an image from the REC
menu.
The following table gives the resulting file sizes for various image file settings. Since actual
file sizes of JPEG images can vary widely from image to image, the JPEG values given here
are intended to serve only as a guide.
File Type BMP JPEG
Fine
JPEG
Normal
JPEG
Basic
JPEG
Draft
2560*1920 14MB 4MB 1.8MB 1.2MB 900KB
1280*960 3.6MB 1.0MB 460KB 310KB 230KB
5M cameras
640*480 900KB 260KB 120KB 80KB 60KB
1600*1200 5.6MB 1.6MB 720KB 480KB 360KB
800*600 1.4MB 400KB 180KB 120KB 90KB
2M cameras
400*300 350KB 100KB 50KB 30KB 20KB
Separate R, G, and B channel data is stored. Overlay composites can be created by
incorporating colored drawings with a pen or other tool.
When you save overlays with the TOOL menu, keep in mind that it may be difficult to read
text information if the file is too small or features high JPEG compression.
We recommend saving files that include text information in BMP format at 1280*960
resolution or higher.
Source Setting Guidelines (Photography mode)
The source setting represents the CCD mode during image acquisition when you freeze, save, or
print images. The DS-L1 will switch CCD modes during image acquisition if the source setting of
saved images is a higher resolution than the display mode. (Note that switching CCD modes will
result in a brief delay.)
In certain cases, you should avoid switching CCD modes – for example, when you expect to
freeze images repeatedly. To keep the DS-L1 from switching CCD modes, display images in a
mode having resolution equal to or higher than the source setting.
The CCD mode will not switch if you view images saved at the lowest resolution (640*480 for 5M
cameras or 400*300 for 2M cameras).
On the other hand, the CCD mode will switch automatically if the display mode is set to
"C.Scan."
If the quality of saved images is important, choose the highest resolution for the source setting
("s5M" for 5M cameras or "s2M" for 2M cameras).