Python Forum

Hello
I have digitalized some picture some years ago.
The scanner has put a date in the Exif Field DateTimeDigitized
I would like to remove this date an creat a new Exif Tag with DateTime.
I am able to creat the new date.

But the DateTimeDigitized seem's strange.
The Id of DateTimeDigitized should be 36868

If I display the image EXIF in python with the code below

def display_exif_data(image_path):
    with open(image_path, 'rb') as image_file:
        tags = exifread.process_file(image_file)
        for tag, value in tags.items():
                print(f"{tag}: {value}")

I get :

Output:
Image Make: Nikon
Image Model: LS-5000
Image Software: VueScan 9 x64 (9.4.25)
Image ExifOffset: 195
EXIF DateTimeDigitized: 2014:02:26 21:33:04

If I add a new Tag (DateTime : 306 for exemple) with the following code

def add_Exif(image_path, id_Exif, data):
    img = Image.open(image_path)
    exif = img.getexif()
    exif[id_Exif] = data
    img.save(image_path, exif=exif)

It works

Output:
Image Make: Nikon
Image Model: LS-5000
Image Software: VueScan 9 x64 (9.4.25)
Image DateTime: 1995:07:01 00:00:00
Image ExifOffset: 240
EXIF DateTimeDigitized: 2014:02:26 21:33:04

With the following code I can remove the Tag

def remove_exif_tag_old(image_path, tag):
    with open(image_path, 'rb') as image_file:
        tags = exifread.process_file(image_file)
    if tag in tags:
        del tags[tag]
    with open(image_path, 'wb') as image_file:
        for tag_key, tag_value in tags.items():
            image_file.write(bytes(tag_value))

But I can't remove the DateTimeDigitized '36868'. ???
If I try to add this tag 36868 with another value I get :

Output:
Image Make: Nikon
Image Model: LS-5000
Image Software: VueScan 9 x64 (9.4.25)
Image DateTime: 1995:07:01 00:00:00
Image ExifOffset: 240
Image DateTimeDigitized: 1995:07:01 00:00:00
EXIF DateTimeDigitized: 2014:02:26 21:33:04

If reading till this point thanks ;-)

=> My question is what is this Filed "EXIF DateTimeDigitized" compare to "Image DateTimeDigitized" and how to remove it?

Thanks

Perhaps a Q&A from 5 years ago will shed some light.

https://exiftool.org/forum/index.php?topic=10875.0

Paul