Fair weather clouds pose a challenge for railroad photographers. When on a sunny day, if a small puffy cloud covers the sun at the moment a train approaches it creates a difficult situation.
The cloud darkens the scene, changes color temperature, diffuses the light on the ground, and increases the difference in exposure between the sky and subjects on the ground.
Back in my Kodachrome days, having a small puffy cloud obscure the sun bascially ruined the photograph.
The other day at Bernardston, Massachusetts, I was in place to photograph the southward Vermonter cross a 19thcentury multiple stone arch bridge.
I could hear the horn blowing. The sun was bright . . . And then, as the train came into view, a small puffy cloud momentarily covered the sun.
I exposed a sequence of digital photos as the train rolled over the bridge. Later, working with Adobe Lightroom, I made a number of changes and adjustments to my files to present several alternatives to compensate for the effects of the clouded exposure.
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