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Lossless rotation
Because JPEG uses irreversible compression (data are lost during
compression), the quality of JPEG images deteriorates when uncompressed,
rotated and then saved. Lossless rotation, however, can be used to rotate
JPEG images without recompressing the data. Exif and other data are
maintained. Images for which lossless rotation is performed are processed as
separate files; the rotated image appears after the image file is saved.
PNG format
Images saved using this format can be compressed to a small file size, but
the reversible compression of this format makes the file size larger than
JPEG. This format is for use with full-color images and prevents quality
loss even when re-edited. PNG files, however, cannot be viewed on older
browsers (Internet Explorer 3.0 or earlier or Internet Explorer 4.5 on
Macintosh). In addition, thumbnail images and image properties cannot be
embedded in the data.
RAW data
Unedited image data output from the image sensor. RAW data are data
before being internally processed by the camera. Camera settings at the
time of capture, such as White Balance, Contrast, Saturation, and
Sharpness can be set for each frame after shooting. In addition, RAW data
are 12 bit data that contain 16 times the information of 8 bit JPEG and TIFF
data. Rich gradations are possible. Transfer RAW data to your computer
and use the provided software to create image data with different settings,
such as JPEG or TIFF.
Spurious Color Signal
Occurring in the vicinity of clearly defined lines or fine patterns, this signal
results in the appearance of colors that are not a part of the original subject
or scene. This phenomenon occurs because each individual pixel on
single-plate image sensors (CCD, CMOS, etc.) is capable of reproducing
just one color (Red, Green, or Blue).
sRGB (standard RGB)
An international color space standard defined by IEC (International
Electrotechnical Commission). This is defined from color space for
computer monitors and is also used as the standard color space for Exif.