Zeee
•
Forum Pro
•
Posts: 25,627
Re: Assign two different AF modes to buttons on R6 II (from a Sony shooter)
2
I left my shutter button to the factory setting which activates both AF and Metering. I've never had an issue keeping the shutter have pressed while tracking and burst shooting. Even if I lift my finger past half way the AF is so fast these days it hardly matters.
I also activated AF Preview which is on page 3 of purple AF menus. My normal starting point is all AF points and Eye AF. The camera will start to look for an eye after it wakes up and you don't have to press any buttons. Referring back to the first paragraph even if I lift my finger past half way off the shutter it takes over and AF continues. It looks like this with white lines. Single lines, not double.

That leaves me with 3 BBF buttons. I've mapped AF-ON to single point AF for general AF. The * button for Zone AF which I use for birds in flight. The AF selector button is mapped for spot focus which I use for smaller birds in thicker foliage.
So what so I use the 3 BBF buttons for? We really don't have a name for it. Pre-focus or override. It is not a programmable, just a method created by users. While Eye AF is amazing the system can sometimes get confused, pick the wrong subject in a crowd or drop a subject.
For example there are 3 people in the frame and I want to focus on the person on the right but the camera picks the person on the left. I just press the AF-ON so single point AF engages, physically move the camera so the AF point lands one the person on the right, release AF-ON, the eye snaps it and then I recompose.
Using AF-ON on I don't have to get the AF point on the Eye. Any place on the body will do. As long as the subject is in the plane of focus the eye will snap in when release AF-ON. I let the system do it's job. I find it much faster than moving the AF points around using the joystick or LCD. I have not set ups the joystick on my R5, R6II or R7. Of course if you do portraits on a tripod it is beneficial.
The reason I prefer my method. Some like to separate AF from the shutter and map it to the AF-ON. That means to override you have to lift you finger off it and press the * button (for example) to activate a non eye AF mode. I use the shutter for both AF and Metering and I just press one of the 3 BBF buttons as needed. The fastest method for my needs.