A different type of wing than the one normally featured here.
I shot this on a mysteriously dense, dark and humid evening. I haven’t yet checked the weather history. I thought it might be residual from Hurricane Jimena, the category-4 hurricane that hit Baja earlier this month.
I had to shoot at higher ISOs than my E-520 likes. She can handle any ISO in bright light, for added shutter speed. But in extreme low light, high ISO is tougher on the little E-520. This shot, at ISO800, was fairly noisy so I decided to crank up the noise reduction, with some loss of detail as a result. I liked the effect of the vortices and wasn’t too worried about the technical merits of the image.
Wing or wingtip vortices, for those who didn’t grow up with an aeronautical engineer (my dear, late dad) involve condensation and vapor. But they are primarily a function of lift and induced drag — and pressure differences on the wing surface. And that’s about as far as I can take it without losing credibility. I’m no engineer. If you understand induced drag and lift coefficients, you’ll appreciate these vortices beyond the visual interest.
The San Leandro Marina provides a daily view to landings at Oakland International. In the winter, at low tide, thousands of shorebirds stir the mudflats as Southwest, Fedex and Horizon planes make that final descent.