The mooring ring is the whole story here. Shooting tight with the 70–300mm isolates the iron against the granite, and the shadow becomes a second subject — almost a ghost of the ring itself. Monochrome strips the rust colour away and leaves only the relationship between texture, form, and light. Metering off the stone ensures the shadow retains full detail without blowing the highlights on the iron.
From the article Montjean-sur-Loire — The Wrong Road, the Right Place on IJM Photography. Canon EOS 6D Mark II | 70–300mm.
Monochromia 
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