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Appendix 161
Photo Tips and Information
Regarding the AF Frame (p. 76)
AiAF* has a wide range of measuring for accurate
focusing. AiAF focuses on the object even if it is not
exactly in the center of the frame.
*
"Ai" stands for "Artificial intelligence" and "AF"
stands for "Auto Focus."
ISO Speed (p. 84)
The ISO speed is the numeric representation of the
camera's sensitivity to light. The higher the ISO speed,
the higher the sensitivity. A high ISO speed allows you
to shoot images in dark indoor or outdoor conditions
without a flash and also helps prevent blurred images
due to camera shake. This is convenient when
shooting images in places where flash photography is
prohibited. The ISO speed setting makes full use of
the available light, resulting in images that convey the
feel of the place they were shot.
ISO 50 equivalent ISO 400 equivalent.
RAW format (p. 57)
With the standard JPEG file format, the camera
processes images after capturing them to produce
optimal results. The JPEG format compresses
images so that more can be stored on a single
CF card. However, the compression is irreversible,
meaning that the original image data cannot be
recovered after processing. In contrast, the RAW
format records the image data as captured by the
camera's CCD without further processing. RAW
images are compressed, but the compression is
reversible so that a high-quality image can be
obtained from the decompressed file without any loss
of image quality. In addition, although a RAW file is
larger than an equivalent JPEG file, it is still only
approximately one-quarter the size* of an
uncompressed RGB TIFF format file, making it
relatively compact.
With standard uncompressed file formats, such as
RGB TIFF, images are processed in the camera and
require further processing by image editing software
to adjust the image parameters, which reduces
image quality. Since RAW images cannot be opened
by many image editing programs, it is necessary to
convert them to standard image file formats, such as
TIFF or JPEG. By using ZoomBrowser EX (Windows)
163


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