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Try these tips to help focus on a subject in a difficult environment:
Lightly press the shutter button to display the green or white frame on the LCD screen of your camera. This locks the focus of the camera until the image is taken.Switch the camera or the lens to Manual Focus (MF).Check the following and try changing to the desired setting.
Focus Mode: The focus mode setting allows you to select the focusing method according to the movement of the subject.
Focus Area: Focus Area settings let you choose the area within the frame to focus on.
If the photographs are partly in-focus you can adjust the camera aperture to get the desired focus of the image.
Photograph with the aperture opened (Aperture value of 2.8)
Photograph with the aperture narrowed down (Aperture value of 16)
Adjust the aperture value of the camera or set the camera to the Aperture Priority mode (A) to avoid partially focused images.
Note: Aperture mode automatically sets the camera so variables other than the aperture are at optimum exposure.
Increase or decrease the aperture value (F-value) of the camera when shooting in dark locations. This reduces or increases, respectively, the amount of light allowed through the lens.
Note: Tripod use is recommended to avoid camera shake.
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