©2011 Curtis Harper
Autofocus (AF) is a great feature that was first introduced by Leica in the 1960's. This technology works by using the camera's sensor to define accurate focus. Some professionals simply live by manual focus and believe it is the only way, but again, we must realize that has it's place, just like a flash or a zoom lens.
Many times when shooting, you may find it annoying that you can't get the AF just right. You might accidentally focus on the background, or focus on an ear when you should be on the eyes. Well, there is an easier way! It is the AE Lock/AF feature. Some cameras come with this as its own button, while others may need to be mapped. Also, the terminology may slightly vary on different bodies.
When looking at the Canon EOS 50D pictured above, notice the AF-ON button. From the manufacturer, this is the same as pressing your shutter button half way to autofocus; however you can customize this. By mapping this to enable exposure lock, you can use your autofocus as desired, lock it, and then not have to worry about the camera changing focus every time you press the shutter.
To enable AE Lock/AF (EOS 50D):
1) Navigate to your Custom Settings Menu
2) Select C.FnIV: Operation/Others
3) Select 3: AE lock/Metering + AF start
4) Press OK
Now whenever you press your AF-ON button, AF will engage. Pressing and releasing the shutter will not change the focus!
Editor's Post: Follow Curtis
No comments:
Post a Comment