From the course: Canon 5D Mark III Essential Training
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Exploring autofocus custom functions - 5D Tutorial
From the course: Canon 5D Mark III Essential Training
Exploring autofocus custom functions
Starting on the second page of the autofocus tab are a bunch of functions for customizing the autofocus capabilities of your Mark III. We're not going to go through all of these in great detail. I'm going to call out some particularly useful ones. You can find explanations of all of them starting on page 94 of your manual. First off, we have AI Servo 1st image priority. If you've used servo focus at all, you know that sometimes, after you've half-pressed the shutter button to start servo tracking, when you press it the rest of the way, the camera won't necessarily take a picture of that moment. If it's in the middle of searching for focus, or if it doesn't think it's got an image that's in focus, it simply won't shoot. If I open this up, I can see that by default, servo focus is set to try and balance between when I press the shutter button, and when I may have focus. In other words, when I press the button all the way down, it's going to go well, okay, he's pressed the button, but…
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