Just playing around with a 400x ND filter and a new HDR program (Bracketeer) that only costs $20 and seems to give good results much easier than any of the more expensive options. This is a combination of 5 bracketed shots. I'm not sure how the program extracts the exposure time, which was different for each of the five.
The intention is that the lines of the canal lead the eye to one of the rule of thirds points.
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