| This one felt so smooth when it came out of the
tumbler. The extreme close-up shows that it is not as smooth as it
feels. It is a union of two distinct types of rock. I find
the line of demarcation interesting. You can see this little
"v" on the full rock shot. This is a near microscopic shot. I used Helicon Focus to gain adequate depth-of-field. I used a Mamaya 50 mm, f/1.7 lens reversed as a close-up lens on my Sigma 105 mm, f/2.8 macro lens. |