<https://www.diyphotography.net/irix-announces-the-21mm-f-1-4-lens-for-canon-ef-nikon-f-and-pentax-k/>
<http://schema.org/potentialAction>
<https://www.diyphotography.net/irix-announces-the-21mm-f-1-4-lens-for-canon-ef-nikon-f-and-pentax-k/>