I have no clue, why I have not put this image on blog yet. I took this image probably 3 months ago. On the trip to zoo, we spent some time in indoor aquarium building. The prime 30 mm f/1.4 was really handy there, helping me to get reasonable shutter speed for the darkness inside. But it had an added feature, the shallow depth of field. Worked perfectly in the image, when clownfish swam just in front of the glass wall of aquarium, rendering the plants in the background in soft focus. Although they are lighter in color then the fish, there is no problem with figuring out, what is the main subject of the image.