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.