S23 preview freezes when zooming in ZSL mode

Frank Derville

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Jun 23, 2026, 4:01:26 PMJun 23

to Android CameraX Discussion Group

Hello

I've noticed that with S23 in ZSL mode, when zooming, the CameraXViewFinder freezes. If you zoom in minimize latency it is ok.

You can set the viewFinder to the required zoom factor when binding but then zooming in ZSL freezes the preview.

kind regards

Frank

Scott Nien

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Jun 24, 2026, 5:41:00 AMJun 24

to Frank Derville, Wenhung Teng, Android CameraX Discussion Group

+ Wenhung,

Hi Frank,

Do you also bind the VideoCapture ?

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Frank Derville

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Jun 24, 2026, 6:17:08 AMJun 24

to Scott Nien, Wenhung Teng, Android CameraX Discussion Group

I only take pictures

I can share a zip of a minimal compose app to reproduce the issue

Kind regards

Frank Derville

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Jun 25, 2026, 2:48:31 AMJun 25

to Scott Nien, Wenhung Teng, Android CameraX Discussion Group

Hello Scott,

camerax-compose.zip

Here is a demo app of the bug. You can switch between standard mode and ZSL. When zooming in ZSL, the Preview freezes (but not in standard mode)

Only tested on Samsung S23

Sans virus.www.avast.com

Eddie Kezeli

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Jul 5, 2026, 10:57:14 PMJul 5

to Android CameraX Discussion Group, camera...@gmail.com, wenhu...@google.com, Android CameraX Discussion Group, scot...@google.com

It seems I am getting something potentially similar: a crash when zooming on an S22 Ultra (SM-S908E, global variant) with Android 16. Cannot replicate on a US variant S22 Ultra. ZSL is not enabled.

Eddie Kezeli

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Jul 15, 2026, 11:37:09 AMJul 15

to Android CameraX Discussion Group, Eddie Kezeli, camera...@gmail.com, wenhu...@google.com, Android CameraX Discussion Group, scot...@google.com

Whoops apologies, ZSL was enabled!

Wenhung Teng

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Jul 15, 2026, 9:45:24 PMJul 15

to Android CameraX Discussion Group, edee...@gmail.com, camera...@gmail.com, Wenhung Teng, Android CameraX Discussion Group, Scott Nien

Hi there,

Thank you for the detailed reports.

We have been investigating this issue on some problematic devices, especially certain Samsung models like the S23 and S22 Ultra. It appears this is likely due to a specific HAL implementation issue on these models that doesn't fully meet Android CCD criteria.

Specifically, the logical camera on these models has different capabilities compared to the underlying physical cameras, particularly concerning reprocessing output resolutions. Because of this, when zooming triggers a switch from one physical camera to another in ZSL mode, it causes a silent crash.

We have recently developed a workaround for this issue, and we expect it to be included in the next CameraX alpha release.

Thanks again for bringing this to our attention and helping us improve CameraX!

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