iOS decides on your behalf when it’s appropriate to use iPhone 7 Plus’s telephoto camera and when to switch to the wide angle shooter. This default behavior can be altered, which helps you avoid potentially unexpected results when shooting video.

If the phone switches to or from the second lens while you’re zooming in or out, glitches will probably appear in the recorded video. Thankfully, Apple, in all its wisdom, has provided a toggle in Settings to easily override this behavior at any time.

With its dual-lens system, iPhone 7 Plus is an awesome portable camera for both pro and wannabe iPhone photographers. In addition to powering depth-of-field photography, the dual twelve-megapixel cameras give you the benefits of an 2X optical zoom.

The problem with lens switching

Due to an ƒ/1.8 aperture and optical image stabilization, the wide angle camera captures images that are sharper and stabler than those taken with its telephoto counterpart. The two lenses have a different aperture and physical position, which also affects image quality.

Jarring transitions in your recorded videos are caused by automatic lens switching, which occurs if your iPhone switches to or from the second lens as you’re zooming in or out.

To avoid accidentally running into jarring transitions while recording video on your iPhone 7 Plus, you should disable the automatic lens switching feature.

Here’s how.

How to stop your iPhone from automatically switching lenses

1) Launch the Settings app.

2) Tap Photos & Camera.

3) Tap Record Video underneath the Camera heading.

4) Slide the Lock Camera Lens switch at the bottom to the ON position.

Your iPhone will no longer automatically switch between camera lenses while shooting video.

This setting only takes effect when you’re actually shooting video. If you toggle the Lock Camera Lens to the ON position, your iPhone will keep on using whichever lens you started recording with. You’ll want to keep that in mind when fiddling with this setting.

By the way, I learned about this feature via the always informative iLounge.

Speaking of which, iLounge explains how this setting affects your video recordings:

In most cases, you’ll simply be relying on digital zoom rather than optical. However, if you begin recording a video while zoomed in to beyond 2X, you may not be able to zoom back out, as you’ll already be using the 2X lens.

iOS uses a number of factors to determine whether it should use the optical 2X lens or simply rely on digital zoom, such as in lower light conditions where the faster primary lens has an advantage, so you won’t always see the impact of the Lock Camera Lens setting.

And that’s it, boys and girls.

Any questions?

If you have any questions regarding automatic lens switching on iPhone 7 Plus, please post them in the comment section below and our knowledgable writers will try to answer them.

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  • Fixed, removed the quoted parts. Thanks for the heads-up!

  • Diego Milano

    I’m surprised Apple added this type of customization when usually this kind of tweaking is only allowed via jailbreaking (e.g. Camera Tweak). Good to know.

  • Saajid Hasan Rizvi

    So does this basically mean that u have dual camera but u opt to only use 1 ????