Long exposure mode - pinkish overlay in low light

[zural9856812]

When shooting with long exposure mode in low light, image has a noticeable pinkish vignetting.

I think it's due to stacked up noise from multiple shots. It can't be removed with noise reduction, because it appears smoothed out.

Here is an example taken in a pitch dark environment.

[Charlie.D]

Hello

We've been working to improve this pink / magenta in lowlight DNGs.  Can you tell us what device and OS version you are using?

[zural91828850]

iPhone Xs