This is an Expo project created with create-expo-app.
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Install dependencies
npm install
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Start the app
npx expo start
open the app on a device press the take photo button take a photo
- the console will log the exif data with the additionalExif included. something like:
// Note the second key is the additional exif added to the camera options
{"SubSecTimeDigitized":"315","UserComment":"This is a valid exif field","ApertureValue":1.69,"ImageLength":3024,"LightSource":0,"ColorSpace":1,"Flash":2,"YCbCrPositioning":1,"Orientation":6,"ResolutionUnit":2,"FocalLengthIn35mmFilm":26,"SubSecTime":"315","MeteringMode":2,"DateTimeDigitized":"2024:05:16 10:52:38","ExposureProgram":2,"SceneCaptureType":0,"WhiteBalance":0,"ComponentsConfiguration":"???","Make":"samsung","DateTimeOriginal":"2024:05:16 10:52:38","ExposureTime":0.02,"SubSecTimeOriginal":"315","YResolution":72,"ImageWidth":4032,"ExifVersion":"0220","FNumber":1.8,"Model":"SM-G991B","MaxApertureValue":1.8,"ISOSpeedRatings":80,"FocalLength":5.4,"XResolution":72,"Software":"G991BXXSAFXCL","DateTime":"2024:05:16 10:52:38","ImageUniqueID":"R12LLMF00SM R12LLMF00SM?"}
then manipulateAsync does its thing and we create an assest to retrieve the exif data from the formatted photo and it will log something like
// Note the absence of most data
{"LightSource":0,"ImageLength":0,"Orientation":0,"ImageWidth":0}