Photo Exposure EXIF Metada Different from Camera Settings

Hello. I have taken long exposure photos using night mode. Some of the exposure settings vary from 10s to 30s. However, when I look at the photo's metadata, it shows a much shorter exposure time. For example a 30s exposure in night mode shows up as 10s in the metadata or a 10s exposure displays as 1s. Is there a bug in the metadata or does exposure in metadata have a different definition?

Please advise. Thank you.

iPhone 15 Pro Max

Posted on Jul 4, 2024 4:53 AM

Top-ranking reply

SravanKrA

Level 10

440,886 points

Posted on Jul 4, 2024 10:54 PM

Upon google search I found this...

The EXIF data shows the exposure time of each individual frame, not the entire Night mode capture process.

To explain this...

Night mode doesn't actually take a single 30-second exposure. Instead, it captures several photos very quickly, each with a shorter shutter speed (like 10 second, or 1 Sec, as seen in EXIF).
Think of it like taking multiple quick snapshots in a dark room instead of holding the camera still for a long time.
Then, iPhone's clever image processing engine takes all those short exposures and combines them into a single final image. This final image has less noise (grainy speckles) and better detail compared to what a single long exposure in low light would produce.

This way, Night mode gives you the benefits of a long exposure (brighter image) without the drawbacks (noise and blur).

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Photo Exposure EXIF Metada Different from Camera Settings

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