Page 40 - Learning How to Photograph with your DSLR Camera 2nd Edition Jan 2021

Locking Focus

To focus our cameras requires a half-press of the shutter button. When the shutter is
held at half-press the exposure is locked for that photograph.
In the viewfinder of your camera, with a half-press,
you will see a box or circle in the center of the frame.
This is your focus point(s).

When you achieve focus a light indicator flashes in
the viewfinder, usually on the bottom. You may also
hear a beep unless that feature is turned off.

Where the focus points rest, is where the camera will
focus. At times, that is not where we want in our image composition. For example, for a
portrait you want the subject off to the side in focus only.
We can do this by:

▪ Putting the focus point on your subject
▪ Half-press the shutter to lock focus
▪ Holding the shutter half-pressed, then recompose your shot
▪ Once you are satisfied with the composition fully press the shutter to take the photograph.

Trouble Shooting

Troubleshooting problems with achieving sharp images can be from numerous causes.
1. The focusing system depends on the contrast in the scene to help with focusing. This works with
the lens receiving light and the sensor being able to discern contrast and focus on those areas. If
there is low light or no contrast you may have trouble autofocusing.
2. If you are too close you may be closer than the minimum focusing distance and that is dependent
on what lens you are using. The minimum focusing distance is the closest you can be from your
subject and be focused.
3. Your shutter speed is too slow.

Assignment

Place your camera in different focus modes. In each mode, explore the focus points
available to choose from. For this exercise I want you to place the camera in Single or
One Spot focus mode. Select 1-9 focus points. Have a model stand in front with room
for a background. Focus on the model, then with shutter release half-pressed to lock
focus, recompose your shot to your liking.

40