Mirror Lockup: When to Use It
|Rose at Brookside Gardens|
(1/25sec, mirror lockup)
|1/20sec exposure, mirror lockup|
- On breezy days, the wind may move your subject between your first and second time pressing the shutter button.
- In changing light conditions, proper exposure may change--if you press the shutter the first time and see the sun come out before pressing it again, you'll likely need to take another picture.
- If you need mirror lockup activated, you probably need to be using a remote shutter release as well, since your finger can cause camera movement when pressing the shutter.
Note: Not all entry level SLR cameras have this feature, so check your camera manual to see if you do and how to turn it on. Often this is a custom function you activate via the menu system. If you do not have this feature, exposure delay may serve the same purpose--this feature delays exposure by a second. I know this works with the Nikon D90. There's a simple way to see if this will work on your camera. Take a picture with exposure delay on and look through the viewfinder. If you can't see through the lens during that second delay, you have a good work around. Another option is to shoot with live view on. When live view is on, the mirror doesn't slap up, so you won't have vibrations.