optional, single

—

Within <aperture> the aperture used for a certain photo is put into brackets. The aperture value is directly written as a real number.

<imagedata>

—

<datetime>, <exposurecompensation>, <filmspeed>, <focallength>, <focusingdistance>, <image>, <imagedata>, <meteringmethod>, <shutterspeed>

<!-- aperture 5.6 -->
<aperture>5.6</aperture>
                

<!-- aperture 9.5 -->
<aperture>9.5</aperture>