Did Fitz Hugh Lane use a camera lucida?

Karen Quinn, a curator at the Museum of Fine Arts in Boston, suggests the possibility that Fitz Hugh Lane used a camera lucida in recording the topography of one of his seascape paintings. (Direct link to video)

The hypothesis hinges on the presumed mechanical appearance of the drawing, and its alignment with the final painting (seen here in a superimposed image). In fact the images don't line up that closely, and the drawing has more of a searching than a tracing look to me.

This example doesn't seem like a really solid case to me, but I wouldn't be surprised to see other examples that make a surer demonstration. (Video link)