How to Use Auto Exposure Lock on a DSLR Camera

The auto publicity lock (AE-S) perform on a DSLR digital camera allows you to bodily lock the publicity studying from anyplace within the scene. You can apply it to its personal or on the level the place you focus the picture.

All DSLR cameras have an auto publicity lock button. When you press the AE-L button, the present publicity settings are fastened (locked) in order that they will’t change as you recompose the shot—even when the extent of sunshine alters as you purpose the digital camera elsewhere.

auto exposure lock

“Catch the Sun” captured by PictureSocial member satyaki basu

When the shutter is pressed midway down, the autofocus mechanism is engaged. As it does so, the digital camera takes a meter studying and units the publicity. But what if you wish to focus and meter from totally different elements of the scene?

This is the place the auto publicity lock perform is useful. It enables you to take an publicity studying independently of the place you need to focus.

The AE-L perform is greatest used with spot or partial metering as a way to repair the meter studying from a small space within the scene. This could be very helpful in lighting circumstances which will idiot the metering system.

For instance, for those who shoot a scene that has a shiny supply in a part of the picture, an evaluative, matrix, or multizone meter can simply drive underexposure. To get the fitting publicity, you might want to take a studying away from the brilliant area.

This could be simply be executed by taking a spot or partial meter studying from a mid-tone space of the scene after which locking that studying by urgent the AE-L button and holding it pressed till you’ve recomposed and brought the shot. On some cameras you don’t have to maintain the AE-S button depressed, on others you do.

The AE-L button can be utilized if the topic or topics are positioned off-middle within the scene. It can also be helpful once you’re capturing a sequence of pictures that you simply need to be stitched collectively in an effort to produce a panoramic photograph. The AE-L perform makes positive that each shot taken within the sequence has precisely the identical publicity settings.

About the Author:
Chris Smith (images-skilled dot com) provides images ideas in his ezine.

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