THIS PHOTO

I was privileged to see this photograph at MOPA (san diego) several months ago, and it just had a deep impact on me. I've seen a few (very few) of weston's other prints, but this one is just astounding, and i've never seen another like it.

1. It looks like a charcoal drawing
2. a second look... the color almost looks like 'matte silver powder'
3. It really does look like SILVER...


i've looked online, the one thing that stands out, is a possibly long exposure (several minutes upwards of 5?)...

Thanks, any details are helpful.