Taking photos of displays...

[David Holland]

On Mon, 2005-02-28 at 17:10 -0500, Paul Koning wrote:
> >>>>> "Jules" == Jules Richardson <julesrichardsonuk at yahoo.co.uk> writes:
> 
>  Jules> On Mon, 2005-02-28 at 15:26 -0500, 9000 VAX wrote:
>  >> > Under Linux, I don't think there's any way I can pull metadata
>  >> off the > camera along with images - so if I take lots of shots
>  

<snippage> 

>  Jules> metadata stuff as well as images...  but you're probably
>  Jules> right, and it probably appears under the filesystem somewhere
>  Jules> which might do the job.
> 
> Something about this sounds odd.
> 
> The metadata is right in the JPG files.  At least it is on my Nikon
> 880.  There's nothing else on the file system (which is a plain old
> FAT filesystem).

Yup.  FWIW, you can even dump the data out under Linux w/ a command
called 'exif'  (Source here, if your distro is package challenged:
http://sourceforge.net/projects/libexif ) 

FWIW, Below is a dump of the data my Canon A80 saves (and I suspect most
modern digital camera's do similarly)  To keep it from being further off
topic, the picture (not that its attached) was of a SGI Crimson CPU
board.

And I agree, its easier to just rip the memory card out, stick it in a
USB reader, and mount it up than to try and get the camera to "talk"
directly. 

David

$ exif img_0310.jpg
EXIF tags in 'img_0310.jpg' ('Intel' byte order):
--------------------+----------------------------------------------------------
Tag                 |Value
--------------------+----------------------------------------------------------
Manufacturer        |Canon
Model               |Canon PowerShot A80
Orientation         |top - left
x-Resolution        |180/1
y-Resolution        |180/1
Resolution Unit     |Inch
Date and Time       |2004:01:22 21:59:25
YCbCr Positioning   |centered
Compression         |JPEG compression
x-Resolution        |180/1
y-Resolution        |180/1
Resolution Unit     |Inch
Exposure Time       |1/59 sec.
FNumber             |f/2.8
Exif Version        |Exif Version 2.2
Date and Time (origi|2004:01:22 21:59:25
Date and Time (digit|2004:01:22 21:59:25
ComponentsConfigurat|Y Cb Cr -
Compressed Bits per |5/1
Shutter speed       |189/32 sec. (APEX: 7)
Aperture            |f/2.8
Exposure Bias       |0.0
MaxApertureValue    |95/32
Metering Mode       |Pattern
Flash               |Flash fired, auto mode, red-eye reduction mode.
Focal Length        |7.8 mm
Maker Note          |878 bytes unknown data
User Comment        |
FlashPixVersion     |FlashPix Version 1.0
Color Space         |sRGB
PixelXDimension     |2272
PixelYDimension     |1704
Focal Plane x-Resolu|2272000/280
Focal Plane y-Resolu|1704000/210
Focal Plane Resoluti|Inch
Sensing Method      |One-chip color area sensor
File Source         |DSC
Custom Rendered     |Normal process
Exposure Mode       |Auto exposure
White Balance       |Auto white balance
Digital Zoom Ratio  |2272/2272
Scene Capture Type  |Standard
InteroperabilityInde|R98
InteroperabilityVers|
RelatedImageWidth   |2272
RelatedImageLength  |1704
--------------------+----------------------------------------------------------
EXIF data contains a thumbnail (5219 bytes).