Quote Originally Posted by Roshni Patel View Post
Great shot! What and how is the mirror lock technique exactly works?
In any SLR camera , whether digital or film, light travels through the lens and is sent to the viewfinder by way of a mirror. When you press the shutter button all the way, the mirror flips up so that the light goes directly onto the image sensor, rather than being diverted to the viewfinder.

The problem with this system is that when the mirror flips, it causes a small amount of vibration. This vibration may introduce slight blurring in the photo, depending on the shutter speed you select. In general, slower shutter speeds (1/60 second and slower) are most susceptible to mirror-induced blurring, but many landscape and studio still-life photographers use their mirror lock-up feature religiously, no matter what their shutter speeds are, to capture the clearest, sharpest photo.

To reduce the effect of mirror slap-induced vibration, the camera offers mirror lockup. When you enable this feature, the mirror movement is completed well before the shot is recorded, preventing camera shake.