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54
More on Photography
Image Quality and Size
Together, image quality and size determine how much space each picture
occupies on the memory card.
Image Quality
The camera stores pictures in one of two formats: TIFF (HI quality) and JPEG
(FINE, NORMAL, and BASIC quality). JPEG images are compressed to reduce
the amount of memory each picture occupies. Images are analyzed in blocks
eight pixels on a side and detail within each block selectively reduced. The
more images are compressed, the smaller the resulting fi les and the less
space occupied on the memory card. Compressing images to make very
small fi les may however cause the block pattern to become visible, and there
may also be noticeable loss of detail. The actual effects depend on the type
of subject and the size of the image when printed or displayed.
Option Format Description Compression
HI
TIFF
(RGB)
Image stored in TIFF (Tagged Image File Format)
with no compression. Use when fi delity is of par-
amount importance. Only available at image sizes
of (2592 × 1944) and (2592 × 1728). Not
available in (auto) or (scene) mode.
None
FINE
JPEG
NORMAL
Normal image quality, suited to most applications.
File size reduced to roughly
1
/
8 of original.
BASIC
Basic image quality, suitable for pictures that will
be distributed by e-mail or used in web pages.
File size reduced to roughly
1
/
16 of original.
Fine image quality, suitable for enlargements or
high quality prints. File size reduced to roughly
¼ of original.
Low
High
Digital Zoom
Digital zoom is not available at HI image quality.
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