Does the SLR take pictures directly after pressing the shutter, or does it focus first and then take pictures?

1, SLR cameras focus first and then take pictures.

In order to ensure the success rate of clear imaging, in autofocus mode, the shutter button starts autofocus at half time (usually called half-pressing the shutter), and the shutter can be triggered to take pictures when focusing. Shutter shooting cannot be triggered when out of focus. This is called the focus protection function.

2. Some beginners are not used to auto-focusing before shooting by pressing the shutter half-way, but sometimes they can take photos by pressing the shutter half-way. This is because the automatic focusing function of the machine is relatively powerful, and it can also focus instantly when the focusing distance is not much different from the last shooting. However, the focus of the last shot was at infinity, but this time it was a close-up, and the autofocus of the machine could not be completed instantly, and most photos could not be completed when the shutter was pressed to the bottom.

3. When the machine is set to manual focus, there is no focus protection function, so you can always press the shutter to shoot directly. But you can't guarantee the clarity of the film.

4. In sports photography, sometimes in order to ensure the capture speed, the photographer takes manual focusing, and first predicts the focus (estimates the position of the subject as a focusing reference. After focusing, once the target appears, you can take your time.

Beginners are advised to get into the habit of auto-focusing by half-pressing the shutter, so as not to get stuck.