[Digikam-users] Time & Date (Original) seconds value

[Mick Sulley]

Thanks Jean-François,  I think you are right that adding a sequence 
number is the better solution.  However I still don't understand why 
seconds are not available for edit.

Thanks
Mick

On 27/02/13 08:05, Jean-François Rabasse wrote:
>
> Hi Mick,
>
>
> On Tue, 26 Feb 2013, Mick Sulley wrote:
>
>> The EXIF data displayed on the right hand panel shows Date and Time 
>> (original) as date plus time in hours, minutes and seconds.  When I 
>> try to edit EXIF data I can change the date and the hours and 
>> minutes, but there does not seem to be any way to change the seconds.
>>
>> Is there a way to edit the seconds?
>>
>> The reason for this is that I use date and time to rename pictures, 
>> and I have some that were shot with APS film, then processed to CD, 
>> and all pictures have 00 as the seconds, so I am getting duplicate 
>> file names where multiple pictures were taken within the same minute, 
>> so I want to edit the seconds on these files.
>>
>> Also there is a tick box and field for Original sub-second, what does 
>> this mean?  I cannot find it in the manual.
>
> Sub-seconds is an Exif tag that has been added to allow a more accurate
> time definition that the second.
> The reason was that standard Exif DateTimeOriginal (tag 0X9003) is a 
> text field limited to 20 characters including a trailing zero.
> So you can store 'YYYY-MM-DD HH:MN:SS', 19 characters, nothing more.
> The subseconds adds a decimal part to seconds, SS.nnn
>
> But as far as I known, very few software handle that and in most cases,
> one needs to process such kinds of renaming 'by hand', with command line
> tools.
>
> Anyway, renaming based on datetime stamp only may not be always a good
> strategy. If you edit seconds, you'll solve your immediate problem, yes,
> but there are several cases where renaming - even with valid seconds -
> will produce duplicates. E.g.
> - images shot with the camera in burst mode. Most cameras can record 3
> or 4 images per second.
> - images collected from several cameras and users. (Typical case is some
> social event as a wedding. When the bride and bridegroom say Yes, it 
> last 10 seconds and when you are the one in charge of the photos 
> albums, you often collect 150 images from all the guests, for that 10 
> seconds:-)
>
> Why not considering adding a sequence number after your date ?
>
> Regards,
> Jean-François
>
>
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