Replacing Mirror Lock UP with Live View

Here is quick tech tip, I generally do not use mirror lock unless I have a shutter speed near 1/15 of a second or if I’m shooting with a focal length of beyond 200mm. Before live view it took slightly longer get set up on mirror lock by going into the menu to activate mirror lock up and again going into the menu to exit the mirror lock up mode. Now with live the mirror lock up is availble in one push of a button. The vibrations from the mirror flipping up and down are down when you need it most. That’s just one extra reason why live view is one of my demands on a camera body.

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9 Responses to “Replacing Mirror Lock UP with Live View”

  1. Derrick Says:

    Completely newbie stupid question, Steve. How do you focus in live view?

  2. Tim Parkin Says:

    Worth remembering that live view will heat up the sensor and potentially increase noise levels.

  3. Steve Sieren Says:

    Derrick are you shooting with the 5D MII? As long as you are in auto focus mode just press the AF-on button directly above the wheel with your right thumb until it focuses or just do it manually. You can use the auto focus as you normally would and then use live view afterwards for it’s mirror lock up capabilities. I usually don’t leave live on for long because it drains the battery faster. I also have it set to where it will turn off live view quickly automatically in I forget. No question is a stupid newbie question with all the changes that happen so often with new camera models.

  4. Derrick Says:

    I’m shooting a 50D right now, and using a little Rebel XSi as a backup to that…

    OK, I see what you’re saying. Using the standard viewfinder, compose and focus, then switch over to live view.

    There are sometimes when I’m using live view, like when the camera’s on a tripod down real low and I can’t get to the eyepiece easily. Is it possible to focus in live view?

  5. Steve Sieren Says:

    With the 5D MII yes but I’m not sure about that with the 50D. Do you have an AF-on button on the back of your camera? You can check your camera’s instruction manual to find out. It is definitely a slower way to focus because live uses contrast in a scene to focus and you have to wait for the mirror.

  6. Derrick Says:

    Got it, thanks for the tip!

  7. Says:

    Thanks for the post

  8. Jay Levin Says:


    An alternative to mirror lockup that has been recommended to me is to set the camera on delayed exposure mode. It’s in a custom function in my Nikon D300. There’s always a one second delay after you take a shot, and you are in effect always getting the benefits of mirror lockup without worrying about the shutter speed. It’s very easy to disable too.

    Jay L.

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