Bluetooth HID Command for iPhone Camera Zoom Control

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Bluetooth HID Command for iPhone Camera Zoom Control

Hi all,

I am working on a project to remotely control iPhone cameras via Bluetooth. I can already emulate the shutter button using the Volume Up HID command (0xE9). However, I’m looking for a way to also control Zoom In/Out and Focus.

I’ve seen some remote shutter products on the market that can handle Zoom In/Out and Focus remotely.

Does anyone know how they achieve this? Is there any specific HID Command for this actions?

Thanks.

iPhone 8, iOS 16

Posted on Sep 18, 2025 02:32 AM

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Answer 1

Sep 18, 2025 11:27 AM in response to m_sakibnaz

my searching turned up this tutorial which references several libraries, one of which may com=ntain the codes you are looking for:

https://codezup.com/ios-camera-api-tutorial/

...and it looks like the main reference was just replaced by something else.

possibly this:

Camera Control | Apple Developer Documentation

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Answer 2

Sep 18, 2025 09:35 AM in response to m_sakibnaz

do you have an Apple Watch yet?

This is your excuse to get one.

Use Camera Remote on Apple Watch - Apple Support

yes, it includes Zoom.

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Answer 3

m_sakibnaz Author

Level 1

4 points

Sep 18, 2025 10:05 AM in response to Grant Bennet-Alder

Hi, Thanks for your reply.

Unfortunately, I don’t have an Apple Watch. Does it use Bluetooth HID to control the iPhone camera? Is there any developer documentation where I can find the commands?

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