How do I fix black screen issue with iPhone 15 Pro camera?

Hello~ Try a forced restart by clicking on below…

Force restart iPhone - Apple Support

Also check your battery health …Settings > Battery > Battery Health & Charging. What’s the % found there?

You may have a hardware issue that will need a check by Apple…

Genius Bar Reservation and Apple Support Options - Apple

Find Locations

Post back if needed. Take care.

~Katana-San~

"15 Pro’s camera screen goes black: My iPhone 15 Pro’s camera screen goes black, and the 1x zoom seems to be stretched too far out, making the image look blurred or distorted. How can I fix this issue?"

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Change the Aspect Ratio:

To change the aspect ratio, tap the lock at the top-right corner of the photo to unlock the aspect ratio.

Source: Crop, Rotate, Flip, or Straighten Photos and Videos on iPhone - Apple Support

Troubleshooting a Black iSight Camera:

A. First, Go Here: If the Camera or Flash on your iPhone, iPad, or iPod touch isn't Working - Apple Support

B. Uncover the Camera:

Is there anything covering the camera? If so, remove it.

C. Any Ungenuine Camera Message?:

Did you recently get the camera replaced? If so, contact the person(s) who performed the replacement, and have them place a genuine camera in there.See Here: About Genuine iPhone Cameras - Apple Support.  They should have known better.