How to accurately focus a SLR camera is how to control the focus and make the focus focus on which point.

1. Set the lens focus mode switch to mf (manual focus).

2. Display the zoom-in box: On the back of the camera, press the zoom-in button to see it on the camera screen and partially zoom in on the image.

3. Move the magnifying box to the position where you want to focus accurately. If you want the zoom box to return to the middle, you can press the Set button or the Delete button.

4. Enlarge the image: every time you press the Enlarge button box, the magnification will be one, five or ten times, and the intermediate cycle of enlargement will be cancelled.

5. When viewing the enlarged image, turn the lens focus ring to focus the image in the amplifier. After focusing, press the zoom button to cancel the enlarged display and return to the normal display interface.

6. After getting the appropriate focal length and exposure, press the shutter button and take a photo.

Expand the subdivision of autofocus function of data camera;

1, autofocus

This function is named automatic, that is, when the shutter is pressed halfway (without lowering or pressing deeply), the camera decides the working mode of focusing by itself, and when the subject is still, the camera will intelligently call the single focus (AF-S); When the subject moves, the camera will intelligently call continuous servo focusing (AF-C).

Features: The camera intelligently chooses the focusing mode according to the subject, which is not what you want.

2. Single autofocus

When the shutter is pressed halfway (neither down nor deep), the camera focuses on the subject and locks the focal length unchanged; If you re-select the subject, you need to release the shutter and press it again to focus the subject.

Features: When the shutter is half pressed, the linear distance between the camera and the object remains unchanged, and the image of the object is clear, which is suitable for shooting still life.

3. Continuous servo focusing

When the shutter is pressed halfway (neither in nor deep), the camera focuses on the subject, and the subject moves or changes, and the camera automatically focuses on the subject.

Features: When the shutter is not pressed for half a time, the camera will automatically refocus the reselected or moved subject, which is suitable for shooting dynamic objects.