iPhone Auto Zoom

[bjfox10]

I apologize if this topic has been covered before, but I was not able to find it. I’m wondering if anyone knows how to change the setting on an iPhone that allows it to zoom in while you’re trying to film a golf swing? I was attempting to film yesterday and every time I was set the camera at 1.0 step in to hit the shot or use my watch to start the recording, by the time I was done the phone had zoomed into 1.7 losing parts of the swing in the process. 
I did turn off the stabilization, but that did not have the effect I wanted.

Edited yesterday at 11:30 AM by bjfox10
Needed to add clarification

[iacas]

I don't think I've ever seen that, nor ever heard of that being a setting.

Do you have a phone with the Camera Control button? You were just using the iPhone's default Camera app?

You could try this: Settings > Camera > Record Video > Check (or enable) "Lock Camera" setting.

[bjfox10]

Thank you @iacas. I’ll give that a try tomorrow and report back in case it can help anyone else.