all available EXIF data

What you are asking does not exist since the module migrate in fields mapping in Druapl 6.x.
I think I can try to create a field with an json or HTML table that contains all the fields in a specific field name.

I have done a very first and simple version of a 'metadata as HTML' widget in the 8.x-1.x branch.
Will try to backport it to drupal 7 version.
To use it :
create a content type with 2 fields :
* an 'Image' field
* a 'Text Formatted Long' Field
In the form display tab, use the 'metadata from image as html table' widget.
Open settings of the widget. As there is only one image, you will only have to save settings.

Then go to the module configuration to add the new content type in the list of content type that must be updated by exif module.

Then create a new content and it should do the trick.

regards,

is this feature still needed or do you migrate to 8.x version of drupal ?

The D7 version is no longer supported.