2007-05-01

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Taken on
April 21, 2007 at 10.23am PDT

Posted to Flickr
April 26, 2007 at 7.33am PDT



What is EXIF data?

Almost all new digital cameras save JPEG (jpg) files with EXIF (Exchangeable Image File) data. Camera settings and scene information are recorded by the camera into the image file. Examples of stored information are shutter speed, date and time, focal length, exposure compensation, metering pattern and if a flash was used.

Source: Digicamhelp.

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Camera:

Apple iPhone
Aperture: f/2.8

Orientation: Rotated 90 degrees clockwise
Resolution Unit: Inches
Date and Time: 2007:04:21 10:23:45
Date and Time (Original): 2007:04:21 10:23:45
Date and Time (Digitized): 2007:04:21 10:23:45
Color Space: sRGB
Tag::EXIF::0xA500: 11/5
Compression: JPEG
Image Width: 1600 pixels
Image Height: 1200 pixels

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Interesting EXIF info (submitted by Bill Baron) from one of the original images:

* Camera Make = Apple
* Camera Model = iPhone
* Picture Orientation = rotated 90° (6)
* Lens F-Number/F-Stop = 14/5 = F2.80
* Color Space = sRGB (1)
* Image Width = 1600
* Image Height = 1200
* Unknown tag: Tagnum = 0xa500 ===> data = 11/5
* Compression = JPEG compression (6)

So, the Apple iPhone does appear to encode orientation information (landscape or portrait) into photos based on whether or not the phone is held vertically or horizontally.

from http://www.macrumors.com/2007/04/29/first-photos-from-apple-iphone/

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