How to focus the SLR camera manually

Lead: Since autofocus is so convenient, is it necessary to carry out troublesome manual focusing? Don't all photographers who are particularly professional and awesome play manual focusing? According to my personal experience, using manual mode in Xiaobai period can make you slow down and feel the charm of shooting carefully. Let's take a look at how a SLR camera focuses manually.

Let's talk about how to do manual focusing. First, let's talk about how to use the live view on the screen to help you focus manually accurately:

? First, set the lens side to MF.

Press this button to switch to the live view on the screen.

? Put your finger on the focus ring; Rotating lens focusing ring

Check the focus through the screen. If you are not sure whether the focus is accurate, you can use the zoom-in button to enlarge the approximate focus area, and then turn the focus ring. Every time the zoom button is pressed, the magnification will cycle between 1 times, 5 times, 10 times and cancel the magnification.

Press the zoom-in button

? ? Turn the focus ring to focus at the magnification of 1 times, 5 times and 10 times respectively.

It is also impossible to twist the focus ring in one step. When the picture becomes clearer, you need to repeatedly twist the focus ring left and right to confirm whether you are in focus, and the enlargement of the focus area picture is only for you to confirm whether you are in focus more clearly and intuitively.

Then cancel the magnification and complete the focusing.

Repeated focusing by magnifying can greatly improve the accuracy of white people, but when you are skilled in manual focusing, you will feel that this method is somewhat inefficient. Try shooting with a viewfinder. Although I can't enlarge the focus area by using the viewfinder, I believe I can master the focus skillfully through repeated practice. But what if I can't see the picture in the viewfinder clearly because of myopia? Is it wrong or is your eyesight wrong?

At this time, you can adjust the diopter to suit your vision and turn this wheel.

When do I focus manually?

We already know the convenience of autofocus and the necessity of manual focusing, so under what specific circumstances is it better to use manual focusing? The most suitable situation is to use manual focusing when the contrast of the scene in the picture is small and not high. Simply put, the picture is messy, the focus subject is too close to the background color, or in a low light environment.

? For example, I want to focus on the blue center of the ship, but the scenery is chaotic, and autofocus is always recognized elsewhere.

Another example is that I want to focus on the yellow chessboard, but it is too close to the color of the yellow chessboard, and the autofocus fails.

At this time, manual focusing does not need to rely on the camera itself to identify, but on your own perception. As long as you can focus accurately through the above methods, even if you zoom in first and then focus slowly, at least you can shoot the subject that you want to express, instead of letting the camera compete blindly, which is very useful for small white to shoot still life.

Also, when shooting macro, manual focusing also has advantages over automatic focusing. Macro photography has a large aperture and a shallow depth of field, which makes it difficult for the camera to identify the subject through autofocus, and a slight movement may cause focus deviation. At this time, manual focusing will become accurate and controllable.

F 1.8 macro, large aperture, suitable for manual focusing.