Many people can ask questions if the shutter is not seen in the viewfinder?
Can not go, but the time is so small that we do not notice, when we only take a picture, some time in the viewfinder, came some time and went very fast!
That's why when we take pictures or see an incomerable mode, the viewfinder is closed by sound.
At the back of the mirror, the sensor shutters are opened, with the click of the right time, the calculations of the light particles coming at the right time try to give the exact picture of that time. However, unlike this timing shutter analog is not an image processor, it is a little over a minute to get the image of the image.
That's why, when the mobile phone cameras are often clicked to take a photo, the picture often gets blurred or the scene changes. So, after clicking on to take pictures in the on-screen mode, you do not have to wait for a few minutes after moving the camera.
However, this depends entirely on the power of the processor. Modern DSLR cameras use very well and very powerful image processors.
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