Mirror lock-up

dictionary
Written by Martin Kaninsky

A function on SLR cameras that raises the mirror before the shutter opens. This stops the vibration of the moving mirror from blurring the picture.

It is used with a tripod for long lenses, macro work and slow shutter speeds. The viewfinder goes dark while the mirror is up.

Martin Kaninsky

Martin is the creator of About Photography Blog. With over 15 years of experience as a practicing photographer, Martin’s approach focuses on photography as an art form, emphasizing the stories behind the images rather than concentrating on gear.

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