This tag notes minimum focal length, maximum focal length, minimum F
number in the minimum focal length, and minimum F number in the maximum
focal length, which are specification information for the lens that was
used in photography. When the minimum F number is unknown, the notation is 0/0.
The manufacturer of the recording equipment. This is the manufacturer of
the DSC, scanner, video digitizer or other equipment that generated the
image. When the field is left blank, it is treated as unknown.
A tag for Exif users to write keywords or comments on the image besides
those in {@link #TAG_IMAGE_DESCRIPTION}, and without the character code
limitations of it.
The model name or model number of the equipment. This is the model name
of number of the DSC, scanner, video digitizer or other equipment that
generated the image. When the field is left blank, it is treated as
unknown.
This tag records the name and version of the software or firmware of the
camera or image input device used to generate the image. The detailed
format is not specified, but it is recommended that the example shown
below be followed. When the field is left blank, it is treated as unknown.