On Fri, 18 May 2007, "J. Landman Gay" <[EMAIL PROTECTED]> wrote:
Wilhelm Sanke wrote:
>> While trying to add the creation date to the filename in a "thumbs"
>> application I noticed that the creation date is actually item 5 of the
>> detailed files rather than item 4, number 4 really containing the
>> modification date.
>>
>> Since the "detailed files" was introduced in Rev version 1.0 and
>> modified in 1.1 nobody seems to have made use of the creation date
over
>> the last years?
On my OS X machine, it's the way the docs say. What OS are you using?
-- Jacqueline Landman Gay | [EMAIL PROTECTED] HyperActive
Software | http://www.hyperactivesw.com
I observed this while working on a WindowsXP machine, and I have now
checked what happens on MacOS (still 10.3.9 on my G4 Powerbook).
For the testing I used two JPG-images, both taken on March 4 with a
digital camera. I modfied one of these images today - May 19 - by
changing the contrast with PaintshopPro 11 and saving the image under
the same name. For purposes of comparison, let's call this image "M" for
modification.
I did not touch or change the second image in any way, let's call it
"O" for original.
I copied both images to the Powerbook using an USB stick.
Looking at the EXIF data of the images (with PaintshopPro on Windows) I
get this information:
Image M: "date and time" : May 19
"original date" : March 4
"digitalized": : March 4
Image O: "date and time" : March 4
"original date" : March 4
"digitalized": : March 4
Loading the two images into my "thumbs" application and using "the
detailed files" I get
with item 5 of the detailed files
image M: "May 19", and for image O: "March 4".
With item 4 of the detailed files I get "March 15" for both images,
which is apparently the date I transferred the images from my camera to
the computer, a value not contained in the EXIF data.
On my Mac: The photo information in "iTunes" reads
for image M: "created" ("aufgenommen" in German): March 4
"digitalized": March 4
"modified" : March 4
"imported" : May 19
for image O: "created" :March 4
"digitalized": March 4
"modified" : March 4
"imported" : May 19
Now the corresponding image information in the "thumbs" stack on the
Powerbook:
With item 5 of the detailed files I get "May 19" for image M and "March
4" for image O.
With item 4 of the detailed files I get "Jan 18, 2038" for both
images!(?); maybe this is an effect of the USB stick? (The date
information in the systems folder shows correctly the date of today "May
19".)
Here is the script snippet I use to append the creation date to the
image name field under the thumb:
"put item 5 of line i of tdetfiles into Datum
convert Datum from dateitems to long date
put Tab&item 2 to 3 of Datum after fld Feld"
================================
Summary:
- "modification" and "creation" dates are not exactly corresponding to
EXIF or iTunes information
- using item 4 of the detailed files which somehow returns a "transfer"
date is not really useful. It probably only returns a "creation" date
when an image was created on the computer and not transferred from
elsewhere.
--
Wilhelm Sanke
<http://www.sanke.org/MetaMedia>
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