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Please display not DateTime but DateTimeOriginal or DateTimeDigitized .
It is because DateTime is not the time of a photographing day but change time.
thank you.

这个评论是针对附加组件的一个早期版本的(0.4)。 

This might happen if there are only binary Exif data. Those are evaluated in the order they appear and the first one wins the trick.
This is a problem for some fields where there are alternatives which should have lower priorities. I now added some code for the next version so DateTimeOriginal will always have priority.
To test this for sure, please send me one of the problematic pictures.