Disadvantages of digital SLR cameras

This necessary flip-up action of the reflector also brings some other problems:

1. The viewfinder will be blocked at the moment the photo is taken. Since the time of being blocked is only a fraction of a second, this is not a major problem for a reflector that resets immediately. However, some contingency issues arise. For example, when shooting with a strobe flash, you will not be able to see through the viewfinder whether the strobe device is firing normally.

2. Noise from reflector movement. This can be an important issue in venues where quiet is required. Since there is no moving mirror in a rangefinder camera that suddenly blocks the light path, this noise does not occur.

3. Camera vibration is the overall movement of the camera caused by the flip-up action of the reflector. Assuming you are shooting with a shutter time of 1/500 second, then there is no need to worry. This vibration cannot be noticed. However, this vibration can be problematic when taking an accurate picture at a longer shutter time, such as when shooting with a telephoto lens in low light.

Fourth, there is another problem when using SLR for viewing. For example, we want to use a small aperture such as f/32 to shoot, and the light that the aperture f/32 allows to enter the lens is very weak. This will cause the image seen in the viewfinder to be very dim, and it may be difficult to focus, or even not at all. Unable to focus.

In fact, SLR’s solution is quite clever. It will first use the maximum aperture of the lens to allow us to complete framing and focusing. When the shutter is pressed, the aperture of the lens will immediately shrink to the preset aperture, completing the When the film is exposed, the aperture will open to its maximum aperture at the moment the exposure is completed, preparing for the next shot.