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phpexif

Exifs image, convert ExposureProgram number

I need to upload images and get Exif to display.

I'm using exif_read_data to get exifs data.

$data = exif_read_data($imageFile, 'EXIF', true);

Everything is fine, but :

$data['EXIF']['ExposureProgram'] = 3

I know Exposure Programm could be :

  • aperture priority
  • shutter priority
  • auto
  • manuel

I don't find any information about this number and what is its meaning.

Maybe someone can help me here ?

Thanks

Solution

  • Why not checking Exif's Standard 2.32 itself? Page 50:

    0 = Not defined
    1 = Manual
    2 = Normal program
    3 = Aperture priority
    4 = Shutter priority
    5 = Creative program (biased toward depth of field)
    6 = Action program (biased toward fast shutter speed)
    7 = Portrait mode (for closeup photos with the background out of focus)
    8 = Landscape mode (for landscape photos with the background in focus)
    Other = reserved

    Phil Harvey's ExifTool reference is also worth to check for additional improper values from vendors violating the standard(s):

    (the value of 9 is not standard EXIF, but is used by the Canon EOS 7D)

    9 = Bulb