Could the 2038 date be set on the camera? By mistake of course...
Cheers,
Luis.
On 22 May 2007, at 21:44, Wilhelm Sanke wrote:
I am not intending to continue this thread endlessly, but I think
the last contributions and questions of Ian Wood and Jacqueline
deserve another response.
I had written:
When a photo is taken, it gets a modification date at the same
time, although it is - as it were - only modified out of non-
existence.
The creation date is generated when the image arrives on the
computer, and a new creation date is generated each time the image
is saved or copied. Simply "moving" an image to another folder
does *not* change the creation date.
This holds for Windows and Ian had pointed out that the situation
might be different for MacOS. I had responded that for various
reasons I am in the habit of *copying" the files from the memory
card to the computer. For that purpose I use an USB card reader.
I have now tested simply "moving" the files from the memory card,
and in this case the creation dates are indeed preserved.
But copying/pasting of files to another folder or volume changes
the creation date, as does "save as" under a different name, but in
all these cases the EXIF-creation date - which is not taken into
account by the detailed files function - remains unchanged.
Jacqueline had commented:
I know the Mac doesn't change creation
dates when just saving a file, and I haven't noticed it on XP
either --
though I admit I do very little editing on that OS. Most of my image
editors are on the Mac.
What about "saved as"?-
As I don't have a card reader for the Mac (or could not get it
configured for lack of a drivers disk) today I imported images
directly from the camera via USB,
once transferring the images directly from the camera by "dragging"
the files from the memory card folder to a folder on the Mac desktop.
The detailed files show the "phantastic" date of "Jan 18, 2038" as
the creation date, whereas the modification date is correct.
When I open the folder in "column" view and click on a file name, I
get the information that the creation date is "empty".
However, the correct EXIF creation date is still connected with the
file and can be inspected with EXIF tools like Alex's "libEXIF" stack.
Then I used "iPhoto" to *import" the same files into the iPhoto
Library: Now the detailed files show May 22 (today) both for the
creation and the modification date.
The information directly from the library folder in "column" view
is the same. Apparently the iPhoto import function works in the
same way I copy the images from the memory card to the computer on
WindowsXP.
Jaqueline again:
>> But this does not explain the "phantastic" date of "Jan 18,
2038" which
>> I got for the creation date - item four of the detailed files -
when I
>> transferred files to my Powerbook with an USB stick.--
Oops, forgot to address this point. It would be interesting to see
what
the creation date is on the USB stick, before the transfer. I
wonder if
something about USB is munging the date somehow when the file is
copied
(I think you suspected this too at some point.) After you've
copied the
file to the hard drive, does the creation date listed in the
properties
dialog on XP match the unusual year as well?
The creation date on the USB stick - after having copied the images
there from my Windows computer and inspecting them there still from
WindowsXP - show the "actualized" creation dates because they have
been copied at the same date.
But read from the Mac with the detailed files, we get "Jan 18,
2038", and "empty" for the creation date when looking at the file
information in the Mac folder.
The EXIF data are intact in this case, too, which read May 5th as
the correct creation date in this case.
I tried three other USB sticks and always get the same phantastic
creation date. When I connect an old Mac harddisk via USB with my
Powerbook, the phantastic date does *not* appear.--
I repeat my recommendation to add the ability to read EXIF data
with the detailed files function:
EXIFdata seem to be really reliable data, survive most transfer
procedures, and spare you the trouble to remember in which way you
have transferred image files from one volume or folder to another
or which special photo tool you used to transfer the images. And
they survive even when the image file is "saved as" under a
different name. They will disappear only when you make major
changes to the image contents - like manipulating the imagedata.
Regards,
Wilhelm Sanke
<http://www.sanke.org/MetaMedia>
_______________________________________________
use-revolution mailing list
use-revolution@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your
subscription preferences:
http://lists.runrev.com/mailman/listinfo/use-revolution
_______________________________________________
use-revolution mailing list
use-revolution@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your subscription
preferences:
http://lists.runrev.com/mailman/listinfo/use-revolution
