delko wrote in post #14436534
Considder it Done.
Think i read about turning on al focus on in a scott kelby book... Not 100 % sure ....
Thank you.
I will post some pics after saterday.
Promise it wont be a plane flying though the blue skies

which is blurry
AI Focus combines two modes. As long as your subject isn't moving it locks the AF and works as One Shot AF. When the subject moves (the focus is "thrown off" it automatically goes to AI Servo AF.
But before it will go to AI Servo, it needs to initially get a focus lock, so it shouldn't be used if the subject is moving.
AI Focus tends to get a bad reputation because people say it tends to be too slow to switch to AI Servo. That may be, although I'd be interested to see some comprehensive test results, especially with newer cameras as the technology has evolved.
The one advantage of using either One Shot AF or AI Focus AF is simply that the AF will in fact lock with confirmation. With AI Servo AF there is no lock, no confirmation. I have used AI Servo a lot with stationary objects and am pretty confident in my AF, but sometimes I'll shoot in One Shot AF and, well, I like the lock/confirmation!
But definitely I use AI Servo if it's with moving subjects!
andbott723 wrote in post #14436535
That is true... Ive just actually had better luck shooting at like f/16 ish so more is in focus.
Shooting at f/16 is not a substitute for getting a good focus! Also, there are two reasons why f/16 may not be practical: First, it cuts down on the light entering the camera, meaning you may need either a slower shutter speed than you'd like or a higher ISO than you'd like, and second, using a wider aperture can give you a "selective focus" effect, where your chosen subject is sharp and other elements such as background elemtents are "softer", out of the Depth Of Field, which can be beneficial if you want "subject isolation".