Photos are captured with incorrect exposure bias in specific scenarios on iPhone 17 Pro

Media Technologies Photos & Camera
alexfoxdev OP
Created 3d
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Hey,

There seems to be an inconsistency when capturing a photo using QualityPrioritization.Quality on the iPhone 17 Pro Main wide Lens. If you zoom above "2x" the output image always has "-2.0ev" bias in the meta data and looks underexposued. This does not happen at zoom levels above 2, or if you set the QualityPrioritization to .Balanced.

See below:

with .Quality

with .Balanced

This does not happen on the other lenses.

I'm using a simple set up and it is consistent across JPEG and ProRAW capture. I have a demo project if that is useful.

Thanks, Alex

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alexfoxdev OP
3d

I should add that I just noticed the same behaviour is exhibited on the Tele lens, so at 8x the ev is -2.

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alexfoxdev OP
2d

Here is the github repository if anyone is interested in trying: https://github.com/alexfoxy/CameraQualityTest

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Photos are captured with incorrect exposure bias in specific scenarios on iPhone 17 Pro
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