Today I read a photo tip (from a magazine) regarding the use of the "AF-On" button.
This is done by configuring/customising your cam body to achieve focus by pressing the AF-On button and then capture the image by pressing the shutter button. In this way, when you press the shutter button, your cam will not try to focus but instead it will just take the picture.
A short quote from the magazine :
"I'm using my thumb on the rear AF button to focus the camera and my index finger on the shutter button to capture, and because AF isn't active on the shutter button, the focusing decision I make isn't overridden by the camera as the image is capture.
With this setup, the AI Servo tracking is active only when you depress the rear AF button. Keep it depressed as you follow the action and capture your images with the front shutter button. When you lift off your thumb for a stationary shot, focus is locked at that location. You can re-frame the image, then capture with the shutter button."
In theory, it sounds ok. I havn't tried it out yet though and I suspect I will get confused during the first attempts.
Are there any users' comment.