My take on the Z6/Z7 focusing issues

Started Dec 27, 2019 | Discussions thread
SaltyPeanut Senior Member • Posts: 1,422
Re: Set A3 to Delay, not Quick

Diswantsho wrote:

beatboxa wrote:

Diswantsho wrote:

beatboxa wrote:

What value did you have for Custom Setting A3?

I shot that on 3, in the middle. I have since changed it to 1, Quick.

You should set A3 to more Delay, not quicker. This value tells the camera how quickly to pick a new subject. And what you wrote above was:

The square sometimes locked onto an object in the background, or halfway in the doggie's run, it would decide the dog is no longer the subject, and start jumping elsewhere in the frame. Then focus was lost.

This is textbook symptoms of a3 being set too fast.

It's unfortunate that so many set (& suggest setting) this to quicker, which is usually the wrong value for what one is trying to achieve. I suspect people see the word "Quick" and think "This will make my focus quicker." But that is not the case.

Setting A3 just makes your camera's subject tracking more erratic. This setting means: "How quickly do you want the camera to forget your subject?"

As I wrote in that link and above, set it to 4 or 5. Delayed keeps your intended subject in focus longer. This is even specified in the manual:

Thanks, I get you now. Yes even at 3 it was a bit erratic. The delayed setting makes sense now.

I've had more success with a3 set to 1 (quick). YMMV. Note I follow the subject with one of the wide mode boxes, I'm not using subject tracking. In my last post I did say try both ways (a3 set to fast and slow).

The issue I've had with a3 set to slow is when it chooses the background by mistake, it doesn't want to re-acquire (naturally, it's set to slow). This drives me nuts. I also use AF-C to track (not subject tracking in AF-C) and like to be able to choose where I want to focus in real time by putting the AF box where I want to, so a3 set to 1 allows for real time AF adjust this way (I just keep AF-ON held down and go about my way). That's just how I do it. Use the settings best suited for your approach.

A3 set to slow is more to avoid change in AF due to foreground objects that may come into view as you pan, not to make it focus on the subject any better/sharper.

 SaltyPeanut's gear list:SaltyPeanut's gear list
Nikon Z6 Nikon AF-S Micro-Nikkor 105mm F2.8G IF-ED VR Nikon AF-S Nikkor 58mm f/1.4G
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