Friday, 13 June 2014

Photo Information

Ubuntu 13.10 Saucy Salamander
Nikon D3200

Having recently acquired a DSLR to play with, I was frustrated by the lack of metadata displayed by the "properties function" of the file manager.  Specifically, in the "Image" tab I could see the exposure time and the ISO, but not the aperture size.  That information -- along with much, much more -- is there, as can be seen by uploading the photo to Flickr.  But courtesy of one of the posters at Superuser, I found this neat command line tool: exiv2.  An example of it's handiwork:
> exiv2 DSC_0001.JPG
File name       : DSC_0001.JPG
File size       : 6445139 Bytes
MIME type       : image/jpeg
Image size      : 6016 x 4000
Camera make     : NIKON CORPORATION
Camera model    : NIKON D3200
Image timestamp : 2014:06:07 17:48:57
Image number    :
Exposure time   : 1/100 s
Aperture        : F4.2
Exposure bias   : 0 EV
Flash           : No flash
Flash bias      :
Focal length    : 26.0 mm (35 mm equivalent: 39.0 mm)
Subject distance:
ISO speed       : 3200
Exposure mode   : Aperture priority
Metering mode   : Multi-segment
Macro mode      :
Image quality   : NORMAL
Exif Resolution : 6016 x 4000
White balance   : AUTO      
Thumbnail       : image/jpeg, 8762 Bytes
Copyright       :
Exif comment    :                                     

exiv2 is in the Universe repository. 

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