Nikon COOLPIX A900 参照マニュアル

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The Shooting Menu (The Common Shooting Options)
Image Quality
* The image quality can be set in shooting modes other than the short movie show mode. 
The setting is also applied to other shooting modes (except Time-lapse movie
Superlapse movie, and Easy panorama scene modes).
Set the image quality (compression ratio) used when saving images.
Lower compression ratios result in higher quality images, but the number of images 
that can be saved is reduced.
B
Notes About Image Quality
This function may not be available to use in combination with other functions (
C
Number of Images That Can Be Saved
• The approximate number of images that can be saved can be checked on the screen 
when shooting (
• Note that due to JPEG compression, the number of images that can be saved may vary 
greatly depending on the image content, even when using memory cards with the same 
capacity and the same image quality and image size settings. In addition, the number of 
images that can be saved may vary depending on the make of the memory card.
• If the number of exposures remaining is 10,000 or more, the number of exposures 
remaining display shows “9999.”
The Shooting Menu (The Common Shooting 
Options)
Enter shooting mode* 
M d button M Image quality M k button
Option
Description
a
Fine
Finer image quality than Normal.
Compression ratio of about 1:4
b
Normal 
(default setting)
Normal image quality, suitable for most applications.
Compression ratio of about 1:8