On Wed, May 24, 2000 at 07:55:58AM -0700, Rasmus Lerdorf wrote:
> > the JPEG header code is is already in getimagesize and
> > iptcembed...
>
> But there is a huge difference between IPTC and EXIF. IPTC is basically
> just file info annotations supported by Photoshop and probably some other
> image manipulation programs. EXIF is the digital camera annotation format
> which consists of hundreds of special tags used by various camera
> manufacturers to store information about the picture.
>
> I realize there is some overlap, but it seems easier to separate iptc and
> exif instead of trying to do everything at once.
i agree - just noted that we already have 2 jpeg-header
reader in php.
>
> Here is what I get back for a file that came out of my digital camera:
>
> Exif header 20176 bytes long
> Exif section in Intel order
> Directory with 8 entries
> Make = "Eastman Kodak Company"
> Model = "KODAK DC265 ZOOM DIGITAL CAMERA (V01.00)"
> Orientation = 1
> XResolution = 150/1
> YResolution = 150/1
> ResolutionUnit = 2
> YCbCrPositioning = 1
> ExifOffset = 190
> Directory with 19 entries
> ExposureTime = 1/250
> FNumber = 951/100
> ExifVersion = "0200"
> DateTimeOriginal = "1999:02:07 09:01:41"
> ComponentsConfiguration = ""
> CompressedBitsPerPixel = 24/10
> ShutterSpeedValue = 800/100
> ApertureValue = 650/100
> ExposureBiasValue = 0/100
> MaxApertureValue = 300/100
> SubjectDistance = 588/100
> MeteringMode = 2
> LightSource = 0
> FocalLength = 240000/10000
> MakerNote = "Eastman Kodak CompanyKODAK DC265 ZOOM DIGITAL CAMERA'q7JPEGAYNL,4&"
> FlashPixVersion = "0100"
> ColorSpace = 1
> ExifImageWidth = 1536
> ExifImageLength = 1024
> Thunbnail size of Exif header: 18628
> JPEG image is 1536w * 1024h, 3 color components, 8 bits per sample
> JPEG process: Baseline
> File name : p0001620.jpg
> File size : 449634 bytes
> File date : 1999:02:07 08:01:40
> Camera make : Eastman Kodak Company
> Camera model : KODAK DC265 ZOOM DIGITAL CAMERA (V01.00)
> Date/Time : 1999:02:07 09:01:41
> Resolution : 1536 x 1024
> Flash used : No
> Focal length : 24.0mm
> Exposure time: 0.004 s (1/250)
> Aperture : f/ 9.5
> Focus Dist. : 5.88m
>
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