Samsung NX 10 ユーザーズマニュアル

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Under the following circumstances, it may be difficult to 
get your subject in focus when:
When the color contrast is not clear 
(When someone is wearing clothes similar in color to the background)
When the subject is in front of a strong backlight
When the subject generates strong reflected light
When there is a horizontally repeated line pattern (window blinds, etc.)
When the subject is not located in the center
When there is a flat white wall behind the subject which does not have 
specific patterns.
When there is a fast moving subject.
When the subject is too close to the camera.





Using the manual focus
If the auto focus function does not operate normally 
due to the environmental factors, your can set the lens 
to Manual Focus (MF) and adjust the focus manually.
When the lens’ focus method is set to Manual Focus 
(MF), this function helps focus the subject by expanding 
the screen automatically. If the focus is adjusted by 
using the expanded image, the focus can be adjusted 
more accurately. (p. 63)
       Getting your subject in focus  
Please try to use the focus lock function.
Adjust the focus by using the half-shutter function where the 
camera can focus easily. Then, simply press the [Shutter] 
button after moving the camera to a desired composition. Keep 
pressing and holding down the half-shutter until you actually 
make a photo shot. 
Under the half-shutter state, press the [AEL] button of the 
camera to fix the exposure value and focus information at the 
same time according to the setting. To cancel the function, press 
the [AEL] button once more. (p. 77)
• Use 
the 
[AF/MF] control switch on the lens to 
switch the camera to manual focus. 
•  If the lens doesn't have an AF/MF switch you 
may be able to select Manual Focus in the AF 
mode menu.
•  The availability of this option differs, depending 
on the lens you are using.
•  When you adjust the focus manually, the picture 
may appear blurred if you don't set the focus 
accurately. Take pictures after setting the focus 
accurately.
•  When using the manual focus function,  
the AF Area is not available to use.
•  In the movie shooting mode, you can not set 
the focus by using the expanded image.