Canon EOS 6D: From Snapshots to Great Shots

Mirror Lockup

One of the biggest challenges photographers face is capturing sharp photos (Figure 10.5). A number of factors come into play: ISO, shutter speed, aperture, subject movement, environment (wind, for example), lens quality, and so on. But you could take care of all those variables only to realize that a slight vibration had occurred when you pressed the shutter release button. How does this happen? Inside your camera is a mirror that allows you to see what your lens is pointed at when you look through the viewfinder. For light to reach your camera’s sensor, that mirror has to flip up and out of the way, which can cause a subtle shake. This can be enough to cause your image to lose a touch of sharpness and focus.

Figure 10.5. To get ...