Streamlines could be a work for the university when I was studying Aeronautical Engineering more than a photo title. But in this case, we could say than both of them.
The use of neutral density (ND) filters permits during the day to shot long exposures. As result, the water flow is showed in the picture like star trails in night shots. It is so curious how what I mathematically learnt is drawn here on the water.
After a rainy winter and beginning of spring, although this is an old pic, the image shows the usual leaves green tones at the beautiful El Capricho park, that this afternoon I am going to enjoy again with a walk there. Unfortunately, it opens only the weekend and has a restricted and scheduled access.
Parque El Capricho, Madrid (Spain)
Canon EOS 450D | Sigma 10-20mm f4-5.6 DC EX HSM + HiTech ND 0.9 filter @ 10 mm | f22, 1s, ISO 100. HDR /DRI from 6 exposures @ [-3 EV .. -2 EV .. – 1 EV .. 0 .. + 1 EV .. +2 EV ]