Olympus c-550 ユーザーズマニュアル

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 41
There are several factors that can cause the picture to appear grainy.
Using the digital zoom to take close-up pictures
• With the digital zoom, part of the image is cropped and enlarged. The greater the 
magnification, the grainier the picture appears.
Increasing the ISO sensitivity
• When you increase the [ISO] setting, “noise”, which appears as spots of unwanted color 
or unevenness in the color, can be introduced and give the picture a grainy appearance. 
This camera is equipped with a function to allow shooting at high sensitivity while 
suppressing noise; however, increasing the ISO sensitivity can result in some noise, 
depending on the shooting conditions.
Taking pictures with the 
f mode set to MWS or X
• When taking pictures of dark subjects using the above scene modes, the picture may 
appear grainy.
• The reason why there are sometimes differences between the actual colors and the colors 
recorded in a picture is related to the light source illuminating the subject. [WB] is the 
function that helps the camera determine the true colors. Normally, the [AUTO] setting 
provides the optimal white balance, but depending on the subject, results may be better if 
you manually adjust the [WB] setting.
• When the subject is in the shade on a sunny day
• When the subject is illuminated by both natural light and indoor lighting, such as 
when near a window
• When there is no white in the center of the frame
• Often, bright subjects (such as snow) turn out darker than their natural colors. Adjusting 
OF toward [+] makes the subject closer to their real shades. Conversely, when you are 
shooting dark subjects, it can be effective to adjust toward [–]. Sometimes, using the flash 
may not produce the brightness (exposure) that was intended.
• Set the flash to [
#] (fill-in) to activate fill-in-flash. You can shoot a subject against backlight 
without the face of the subject appearing dark. [
#] is effective not only for shooting against 
backlight, but also for shooting under fluorescent and other artificial lighting.
• Setting OF to [+] is effective when shooting against backlight.
• When [FACE DETECT] is set to [ON], faces in pictures appears bright, since adequate 
exposure for the detected face can be obtained even under backlight conditions.
The picture is too grainy
Taking pictures with the correct color
Taking pictures of a white beach or snow scene
Taking pictures of a subject against backlight