What are the advantages of eyepiece framing and LCD framing in SLR cameras?

SLR cameras all have optical viewfinders. The advantage of using an optical viewfinder is that under the structure of a SLR camera, what you see through the optical viewfinder is what you took. In the past, the biggest advantage of the flagship SLR fuselage was that the field of view of the optical viewfinder was 100%.

Using optical viewfinder to find scenery has several advantages: 1, which is not affected by strong sunlight; 2, not turning on the machine does not affect the framing, saving electricity; 3, in the case of optical viewfinder framing, the arm is close to the body, holding the fuselage in one hand and the lens in the other, which naturally forms a triangular posture, which is relatively more stable than using LCD screen framing, and can minimize the influence of hand shaking!

Optical viewfinder can also display parameters, perhaps less than LCD, such as histogram.

The main disadvantages of LCD framing are: time delay, power consumption and unclear viewing under strong light.

The most important advantage of optical viewfinder is the focusing principle and phase detection of optical viewfinder, which can make us get faster focusing speed. Of course, the disadvantage is that only the point with detection unit can focus, so we can see that not all positions of the optical viewfinder can focus, only the position with focus can focus. LCD real-time viewing uses pixel sharpness detection to detect whether the focus is real, so the focusing speed is slow and the focusing process is hesitant, which is not practical. (Of course, there is also a small advantage, that is, the focusing method of the LCD screen allows it to focus in every position. )

Moreover, the picture is sluggish. Although the current LCD screen can't display in real time, the delay of several milliseconds is really negligible. As for the advantages mentioned above, such as not being affected by strong light, saving electricity and holding the machine posture, I still agree with them, indeed. But as I mentioned above, the difference in focusing speed between the fragrance focusing unit embedded in the eyepiece and the pixel detection of the LCD screen is very important.

Three reasons, power, shutter delay and reaction speed. The viewfinder is a pure optical structure and does not consume electricity. The LCD screen consumes a lot of power when it is used. The optical viewfinder can shoot all day, and the screen viewfinder can only shoot for two hours. Optical framing, take photos immediately after pressing the shutter, and the screen framing has a delay time of about 0.5 seconds. If you want to capture something immediately when you turn it off, you can shoot it when you turn it on. It takes no more than 0.5 seconds from the reaction to the completion of the photo shoot, and the screen capture is at least 2 seconds.