Nikon D500, 150-600 mm Sigma at 825mm equivalent, ISO 100, f7,1, 1/200 sec.
Adjusted only exposure and contrast.
Photographing Pigeon Point Lighthouse and capturing the Green (and occasionally Blue) Flash are two of my favorite subjects on the San Mateo County Coast of California. There was slight inversion on one of the few fog-free days this summer and I drove there hoping to possibly catch one or the other. Fortunately, I was able to get both with probably the most distinct blue color I have seen, with a very strong blue spike on the histogram.